Okay, just installed the Flipper/Bushing 3 x kit in my GnR LE...Holy Friggin Moly!

Seriously, JJP should partner with you IMMEDIATELY @1956PINHEAD! It really makes the game feel entirely different in a great way! This is how GnR was meant to be played.
If you got rid of your GnR because you thought it felt sloppy, too much multiball crowding etc...I urge you to seek out someone with GnR and this system installed. It literally is a new game. The shots are clean and crisp, shoot ...even had fun calling my shots on Slash Solo, which in the current code is an amazing feat.

In no particular order, just random thought on the install and initial playtesting>>

1. I had to set the flipper coil power back to DEFAULTS. Yep, you read that correctly. Default is plenty of power with these flippers and bushings. The game now shoots amazing. None of this floaty garbage, you get serious returns from serious accuracy.

2. Part of making GnR fun is getting balls up the guitar lock and around the orbits during multi-ball to clear the chaos and keep the songs rolling. This system really helps in that task of allowing you to nail the orbits and the guitar lock on the fore and backhand shots.

3. The bushing and shaft tolerances are so tight, it magnified the power in my right flipper and at first I was getting a loud clack on the flip...thought I did something wrong at first...I then inspected the flipper coil and whalla, the thing was way past due for a change. The new system illuminated the fact I was due for a coil stop change. Who would have thought? Changed the coil and loud clack disappeared.

4. These look amazing. Industrial and clean. Actually took off my old flipper toppers in favor of the clean look

5. As mentioned above, I had to remove 3 bolts on the right ramp to be able to insert the shaft through the bushing.

6. Biggest pain was changing the bushings as I had to remove each assembly to get at the locknuts holding the bushing screws

7. Once the shafts were in, aligning the flippers was a breeze. I did have some serious ball hop at first and had to re-align and raise the ball guides on the inlanes as they were sitting too low towards the player and giving too much ball hop on a slow roll.

8. I aligned the flippers with the rubber on using a straightedge across the guides and flipper , then adjusted the guide rail. When done, I had maybe a millimeter of clearance between the straightedge and the flipper rubber with the edge sitting right on the guide rail. This completely got rid of any hop.

9. All the flipper tricks are there, dead stops, live catches, drop catches, post passing...it also make shatzing a little easier due to just a slight bit more control on the flipper tips. Which again makes the orbits and the under the flipper shot easier to repeat also.

10. I did not install a short flipper on the upper playfield, didn't seem necessary and seemed more of a hassle.

11. Going to get them for Star Wars Premium and Walking Dead LE next

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I had to hold the guide up with a pretty good amount of force as I screwed the posts back down

Done!

https://pinside.com/pinball/forum/topic/the-official-jjp-gnr-thread/page/456#post-7119169

Ordering a set for my Star Wars Premium and later my Walking Dead LE

Ha, I asked this in another thread before I read this one. This was my first question about the power, thank you

Just curious 1956PINHEAD , I noticed on my GnR, the nylon bushings had lock nuts on the screws in the back of the plate.

I've got an order coming in for my Stern and Stern doesn't use lock nuts on their bushing screws from what I can tell. With the metal bushing replacement, would it be wise to secure the 3 screws holding the new bushing with locknuts, or is that overkill?

Perfect! Thank you much

Installed!!! Look and play so well!!!

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I posted this per request in another thread but thought it fit the bill nicely here as well.

My GnR LE with the precision flippers installed on the lower playfield flippers (upper is stock)

The coils are on default power, the center vuk is bumped up a hair...I like the quicker return, but the flippers do also have the Pinmonk fans installed.

Please excuse the video. I don't have a rig so literally clamped my phone to the backbox and flipped and rotated the image in a video editor so the quality is a little lacking

Also, excuse the play style, I didn't dare nudge for fear of jostling the clamps free and the entire apparatus crashing down on the playfield glass.

Hope this give an idea of the flipper action

That's not ghetto, that's ingenuity... Looks amazing

Okay, sorry for the retread...After doing all the above, I found that it became VERY hard, really impossible to hit the "Under the flipper" shot. I forgot to test that one specifically when setting everything up initially. I tried everything, resetting to defaults on power, raising the playfield angle, realigning the flippers, trying low bounce Titan rubber...no matter what, I was always giving up one shot somewhere. So back to the drawing board...Since the bushings are really the heart of the system IMHO and the flippers are more cosmetic, I switched off to the original plastic bats. The Precision ones, are just a little finicky on the shape and ball hop with JJP (my Star Wars doesn't have any issue, just lowered power settings), so I thought maybe to meet in the middle.

So now I anm using the following setup:

Playfield (bubble touching second line)
Precision bushings
JJP factory flippers
Titan Competition Flipper rubber
System settings Power: Left , Right , Upper Right

I played with the glass off every shot and especially focusing on tweaking the orbits, the backhand up the left ramp, the under the flipper from left flipper, under the flipper from right with 2 balls cradled, post passing, the right flipper shot to the left ramp, and the upper loop orbit off the upper right flipper

Findings:

No flipper hop at all with plastic flippers and metal Precision bushings
Consistant shots to all focus areas listed above
Playable without the feeling of being too easy...feels factory but with no fade and better precision from the Pinmonk fans and the Precision bushings

Overall I thing I have put GnR through the ringer in testings and maybe it's just my machine, but I couldn't get EVERY shot successfully dialed in with both the flipper and the bushing combo. Like I said, this issue, including the flipper hop doesn't exist at al for me on my Stern setup on Star Wars. Maybe it's just a JJP thing. The flipper bat on the precision is a little more pointed than the JJP one and GnR is VERY VERY tempermental when it comes to dialing in everything. Which I think falls on Eric Mineur's shoulders. It's a good game, but at the end of the day, this is no Elwin shooter, and the shots can only be as good as designed.

Sorry for the rehash and somewhat of a retreat for the full system recommendation on GnR, but I wanted to be honest with the community about my further experience.

Settings power (using Pinmonk fans as well)

These may vary slightly on your machine, individual testing is recommended

L 22
R 18-19
UR 10-11

updated my review with some changes to my initial and suggestions after hours of gameplay and testing

https://pinside.com/pinball/forum/topic/review-precision-pinball-products-cnc-flipper-system/page/20#post-7169781

I'd be curious to know as well @iceman44? I'm currently running the Stock Plastic Flippers with the Metal bushings and I can nail the under the flipper shot when I have to as well as hitting the upper playfield with a left flipper backhand 75% of the time from a cradle, or 95% from a slight microflip to get the ball just off from the cradle position..as well as smooth orbits, but I try to play the game and not exploit the backhand patch mechanic and want to be able to make that shot when I have to... For some reason, I couldn't do that with the Metal flippers, I always seemed to be missing just one shot somewhere, or getting ball hop on the rail guides.. and if I powered the coil down enough to make the under the flipper, from the left flipper, I then couldn't back hand the left ramp... Really weird

I guess every game has its differences and mine seems to be shooting the best it has ever shot with the Precision Bushings and stock plastic flippers. That combo seems to be working the best and providing the most consistant flow (the orbits are super smooth and I can hit the upper orbit off the upper right flipper 3 sometimes 5 in a row - almost has a Godzilla feel to it) and fun shots throughout.

Love the look of the precision but I just couldn't dial them in as a full set on JJP (my Star Wars has no issues at all with the Precision combo and shoots amazing having had to dial the flipper coils way back and no cooling fans necessary)...

My power coil settings are now, 20 on the right flipper, (way down from stock) 22 at stock on the left and 10 on the upper right.

Flippers are aligned with the guide rails and no ball hop on the rail to flipper transition

I do have to say: GNR LE is the most sensitive (ie read finicky) to pitch and alignment versus any game in my lineup which includes some very sensitive ones such as Godzilla PRE and StarWars PRE

Given the fact that all these pinball machines are handmade mine might just have an early build CNC which positions the flippers just awkwardly enough to make things tricky

John is sending me out narrow bats to try on my jjp and I'm going to Blue tape the current position that I know works and then reinstall his system and do some testing

Awesome, good to hear! Can't wait to try my thinner bats from John. I'm repeatedly hitting better shots though and the flow is off the charts better than factory GNR that's for sure, that's just what the bushing replacements right now

Man those look really incredible on Rush

Just got my thinner Black flippers to try with my GnR courtesy of 1956PINHEAD .

I've been super busy but will install these soon to give them a proper go with the metal bushings currently installed

I was having a little trouble with mine and the metal JJP bats some may recall with some minor flipper hop. I have an early GnR so it may just be the machine as the stock plastic don't have the hop

I'll give these a proper install and feedback soon, I promise

Finally got my narrow (original Stern size) Precision flippers on my GnR

I originally had the full JJP set including flippers for JJP games installed but was getting some flipper hop and there was always one shot I couldn't dial in. It would rotate as I would align the flipper/ adjust power for that shot, another would become unmakable. I eventually went back to the JJP plastic factory flippers (skull toppers in photo) used with the metal Precision bushings.

John was kind enough to send a replacement set of thinner, original sized flipper bats to try out.

I can now report that everything works

I taped off the flipper position to know exactly where to line up the new bats for reference.

I also dialed down some of the power settings.

I can now report the game shoots well.

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Just checked my Star Wars, after a 100 plays or so, no visible wear. Using Titan Competition Silicone on mine.

Just a small dent on the top of one of the bats but that's to be expected, I'm sure

Here's some varying light angles

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Finally got my Halos installed with the keyed shafts and metal bushings. Ive tried all the variations on my GnR...original precisions, plastic flippers with metal bushings, plastic bushings with metal original precisions....I can now confirm, this final SETUP is the best setup and GnR shoots like a dream now. No hops, smooth control, just enough play, no hard weird rebounding, able to hit all the shots, under the flipper, backhand ramp and all the orbits...I'm using power settings 24, Left, 26 Right and 14 upper right for the GnR folks out there...I've got a steeper game so that's the reason for the slight bump, otherwise, I probably would leave the power at default.

A+
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Thanks as well for making such an awesome product...I like the sealed packaging as well!

Thanks @Vespula, glad to help out when I can