I need some advice. I have been buying up a lot of cocktail pinballs (I know, but I love them). Anyway, all the Allied Leisure machines (and I have 9 or so now) have cupped inserts. Cupped enough that the ball will stop in them sometimes...lol. I bought most of these cheap, so I don't want to spend much on them ideally, but I would like them playable. Any ideas out there that are pretty easy, and pretty inexpensive?