No. The washer goes under the end of the guide near the right upper flipper. There is a screw that holds it down and the hole in the guide is ovalled so you can adjust it. He is saying that without the washer, the screw is torquing the guide wrong. The washer alleviates this problem and makes it straight.

Mine does it as well, but only when it's a clean shot up the ramp really fast. Saw someone on here but foam on the bottom crossbars of the wire forms to slow it down. On a side not, I was starting to have a problem with both my manual and auto launch hitting the lower post 90 % of the time. Did the washer fix under the guide screw and now it works like a charm 100% of the time now.

I'll have to give them a call and see what they say. Also wanted to give X-Rug big props for figuring out the washer under the guide fix for the shooter lane. Works for me 100%.

That is exactly how it goes. I did it on mine and now it's like 100% every time. The only time it doesn't go through the loop is when I wimp out and don't plunge hard enough.

Yes it is a PITA. And the bummer is it's the only one that doesn't screw in from underneath, they stapled it in place so you can't get to it from the back side.

Wish I would have known that. Mine kept moving on GOTG Pro, so I ended up drilling a second hole and putting another screw in to hold it in place

I was starting to have the same problem. Took a look today and the rubber tip on the plunger wasn't straight. It was a little crooked and would not hit the ball dead center all the time. Adjusted the rubber tip to be straight, and now it works again.

I think every machine is different. On my pro, I tried the shim fix figuring it would keep the guide in place and not let it move, but it actually made it worse. It would not fire correctly 100% of the time. Took the shim out and did the washer fix. Put the washer under the end of the shooter guide where the screw is, I actually put 2 washers there, and now it works 99%. Manual was shooting off, but it was because of where the rubber tip was hitting the ball. Adjusted that to hit center, and now it works 100%.

Here is the washer mod

Just click on the quoted section and it will take you right to the post.

My pro does the same thing. Pretty tight fit. The good thing is it fits in tight and don't have to worry about it being shifted one way or another to be misaligned with the plunger

I bought one 2 of those kits for both SM and GB. They work great. Sold by Arcade Upkeep and only $65.00. I actually got them for $45.00 during their black Friday sale. Even normal price is a good deal.

That's how mine looked when I installed it and thought it weird it covered the opto's like that, but have had no problems and registers every time. Don't know the science behind it, just know it works.

My manual plunge works like 100% of the time, though I do short plunge almost all the time to try and get the secret skill shots. My auto launch works 90% of the time. The 10% it doesn't work seems to be when it auto launches a bunch for ball save on a multi ball. It's like the more it launches, the coil heats up and maybe gets weak because after I play for awhile it goes back to working since the coil has time to cool down. I might have to try the more powerful coil I've read about and see if that fixes the problem.

Stupid question here, but I take it that you just cut the wires for the diode and removed it?

What about the diode that comes on the solenoid? Saw it said to remove it. Just cut the wires to it I take it?

My ball launch has been pretty much 100%. Lately it hits the post sleeve about 5-10% of the time. Looked and noticed that the end of the guide was dinged a little, so figured this was the problem and went to take it off to file it smooth again. Low and behold when I took it off, I noticed the anchor stud that is riveted on to it was broken. That might cause an issue. Emailed Stern and waiting to hear back. Here are a couple picks of it. One with the rough edge and one with the broken piece. Kinda weird.

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I have the same issue with my pro. I put a tiny piece of electrical tape on the bulb to make it sit tight in the holder. That seems to work for quite awhile, but every now and then it starts to flicker again and I have to take the bulb out and reset it in and it's fine again. Must be something with the vibration of the flippers. If there is a more permanent fix, I would sure like to hear it.

Thanks for the tip. I'll give that a try. One of the bulbs on the left out lane goes out and turns back on when I hit the flipper button. Starting to piss me off.

Squeezed the socket together a little, but didn't even think about stretching the spring a little. That did the trick. Thanks for the advice. Now I can keep my sanity.

If I remember correctly, you had to cut the diode off that came on the new stronger coil.

I used to have flicker problems on the outlanes as well. I did the tape trick which worked for awhile, but then it would start happening again. Read somewhere about getting pliers and crushing in the socket a little and then grabbing the spring inside and stretching it up carefully to make it a little longer so it would make a good contact with the bulb. Did that and haven't had a problem since.

Sounds like you have the same guide rail as me. I put a washer under the guide at the screw on the end by the play field. It seems like some guide rails would flex when tightened down and cause problems. Once I did this, it shot true 99% of the time. On mine, I know if the coil strength is to high, it will bounce off the post. Kinda counter intuitive, but I guess the ball bounces off the rail instead of follow it. But then, the post that goes through the play field broke on mine, so I got some plastic wedges and crammed one between the guide and side rail, and put another one between the end of the guide and the post that is right there so the rail wouldn't deflect. They are shepherd plastic shims #9435 you can get from Amazon or a hardware store.

Also, when you clean and wax the play field, it will shoot off and you have to reduce the coil strength. As you play more, you have to raise it a little. It's a little finicky.