Have bricking drops been an issue? Since shopping mine I've been getting solid shots to the drops (more than just the front one) rejected with no drop. The only difference I can think of that I caused was cleaning the flipper mechs and replacing nasty coil sleeves when in combination with waxing has resulted in significantly higher ball speeds. I didn't mess with that mech at all, nor have I inspected it since I noticed the problem. Thinking possibly its gotten loose and shifted back?
Curious if this is a known issue with a solution. I'll get to popping the hood on mine in a day or two.