I just want to share my recent trouble shooting episode with my TMNT Premium. I also want to give a big shout out to a real gentleman in the hobby, Vic Ireland aka vireland. As always, he was a big help in making suggestions of where to look to solve the problem. Here is what happened to my game. All of a sudden the game stopped seeing balls entering the Pizza Parlor. If the Parlor filled up with its' 3 ball limit and a fourth one tried to find a spot, the game would pause and then go into ball search mode. In that process, one of the 4 balls would eject but the other 3 remained. Even at game's end or at start up, any balls in the Parlor remained in place. The obvious suspects were magnetized balls and/or bad OPTOS. In fact, they were not at fault. After much trouble shooting we traced the problem back to the switch No. 8 which controls the upper right flipper. We found a cold solder joint there on both the hot lead and the common ground. That resulted in the OPTOS' common ground also being open. Hence, the Parlor did not operate. I guess the moral of the story is that these games are very complex (pinball is easy?? huh??) and the solutions to failures can be quite hard to find but even neophytes like my wife and I can 'do the work when necessary'. I hope this may help someone else if they have a similar problem.