The past two days, I have noticed my IM ends some games while a ball still on playfield. Today when I drained a ball, the game did not recognize that and start to look for the ball, restarted but still the same.
It can be the a switch, I tried to go through diagnose but didn't find any option to check the those switches.
Sometime the game gives me two balls on one game, not really sure if it's something related.
Any advice ?