Quoted from SDTMinSTL:

Can't help on the first one, but I can on the third.
Stern's ball trough rollover switches can sometimes not register due to a sticky or stiff switch. Generally, a simple adjustment to the rollover leaf will allow the pressure of the ball to make more constant contact. This can show all the time, or more typically in a scenario where the ball slowly falls in the trough and doesn't have the inertia to activate the rollover. I would bet it is the last switch to the left in the trough. It is simple to get to. Worst case scenario, you could put in a new switch. Some of them just inherently have more resistance and require some adjustment. I had this same issue with my Walking Dead and it now functions just fine. Best of luck.

Quoted from IdahoRealtor:

Hmm. Knowing what you LE owners know, what version would you recommend to those of us considering Pro or Premium?

Quoted from Zukram:

Had my best game ever after updating to this version, but also hit a bug I think. Had several of the MB's running (Trooper, ACES High, Mummy) got the add a ball somewhere in all of that, probably a couple stacked the same time.. Seemed like it lasted for 5-10 minutes, during all the frenzy, there were balls draining, reviving like mad.. Then the flippers died, and it totaled my bonus, with 3 balls still in play.. In any case, I doubt I'll recreate that again any time soon, but wondering if anyone had that happen with this or previous version.. Otherwise I like the few new things I noticed in this version, some font changes for high scores, new animations, call outs in attract mode..

Quoted from Russell:I don’t fully understand the rules of Mummy MB and sarcophagus locks. However, it seems to be very difficult to trigger a switch connected to the captive ball when a second ball is in the lock position behind it. It is basic conservation of momentum. The first ball doesn’t move. Perhaps not even enough to trigger a very sensitive switch. Just watch a Newton’s Cradle.

Quoted from Russell:

Hmm, that switch tests OK, but I wonder if it should be more sensitive.

Quoted from Toasterdog:

So I found out my answer after investigating further. The lower support on this wireform is wielded too high some how. It acts like a very small speed bump and causes my balls to hop over either rail probably 1 out of 3 returns, maybe more. On my last game the ball actually got stuck on it during multiball and it took a vigorous shake to dislodge it. I’ve lost plenty of balls hopping right over and into the outlane.
This was my previous attempt to corral the ball. It worked pretty well but created a bounce back effect at times.

I know a couple of you had similar, frequent issues. This might be the thing to look for. (I tried bending to correct with no luck)

Quoted from AttilaK:

I ran into all the problems that is mentioned on this thread and was able to solve it. But now running into something that I have been trying to fix for the last 2 hours with no luck. It is a very strange problem and something that may have come out of alignment after putting a lot of games on this machine. I called stern and apparently the fix they recommended to me has fixed several machines now ... however, no luck. Maybe they are BS'ing me.
Anyway, the problem is with auto-launch or even shooting ball manually. It will never make it across playfield to say the super skill shot. It keeps hitting the top post (see pic)... it works 100% since I got game about 2 weeks ago but stopped worked a few days ago. It is very annoying when you get trooper multiball and all the balls don't make it up to the top where it is released at one. I am very disappointed that paying this much money for something and have continuous problems. I took the ball guide off and bent in many positions to see if I can get it to work, but no luck. Hope someone here was able to fix - as per stern it should be just a minor adjustment.
Thanks!