I thought I had this game working 100% but low and behold it slapped me in the face and said whoa boy. The game has 5 roll over up top. When you go through lane 1 through 5 it lights its corresponding number near the spin wheel. The game adds a ball if you hit the number on the spin wheel that is lit from the lanes. It is also supposed to add a ball if you lite all 5 lanes. However it adds max balls and runs it up to 10 when all 5 are lit. What would make it do this? is it a separate switch from the single number on the spin wheel? My only guess without schematics and more time before I had to leave was a different switch somewhere that is stuck. You would think a machine gun is being fired when it awards 9 balls that fast lol.

Thanks. I've been out of town for a few days and will get back on this this afternoon. Since all other ways of adding balls work correctly and there is not a specific relay in charge of adding balls I have concluded it must be a switch (or switches) on the 1 thru 5 roll overs. They each have a lock in solenoid with about 4 contacts. My guess is once all five lock in it completes a circuit to advance a ball. I can't see anything mis adjusted but have tried cleaning them a few times. I have not had more than one extra extra ball added since this so I think I'm getting somewhere but it is such a crap shoot with no schematics. Sometimes they are posted as pics on idpd but alas that is not the case here.