On my TSPP, I'm having an issue where when the first ball is locked in the couch, it is fine. However, when the next two balls are locked, the first ball starts dropping too far into the lock and doesn't contact the switch for the first ball being locked and the game goes into ball search. This issue used to be pretty rare but has now become almost constant. Anyone else run into this? I'm wondering if the spring in the plunger that releases the balls has become too loose?