Are you saying that after a game is completed, the counter will keep counting upward until it maxes out,
or once at the end of a game, or increases once during game play as it should if a certain score is reached?
I just read your last post. It doesn't sound like something mechanical in the Replay Unit (counter), but something
electronical as if maybe a two plays for 1 coin relay activates. I have an Aladdin's Castle (at a Friend's Pizza place)
and I have it set so if a certain score (high score) is reach, once that ball has drained, you shoot that ball again.
(Same Player Shoots Again). More less a free ball. I believe there's an adjustment for that maybe in the back box
(head) of the machine..