Been having some issues with mine, mostly centered around multiballs and drains. Maybe it's just my trough switches but checking to see if any others are experiencing. My trough switches seem fine otherwise, just wonky in the multiballs sometimes.
In nightmare multiball, 2 balls drain, 1 ball still in play, but the mode doesn't end - so I'll be in multiball until I drain.The game correctly registers the final drain/ends the ball.
In Defeat Rudy the last time I was there, I lost 2 balls very quickly, then the 3rd ball, which it never registered, so stuck in Defeat Rudy with no balls on the playfield. Maybe it's the 2 balls draining fast in succession?