Thought I solved this problem by myself but it has returned....
When playing, the game will not 'count down' the 'ball in play'. It stays at "5" (or even goes up if you spell SPECIAL or make the tic-tac-toe).
The Ball Count Reset relay does work, and it will count down (and then back up) when you press the start button. I was having this issue a week ago and thought I fixed it by cleaning/gapping the outhole relay, ball index relay, etc. but I must have overlooked something. The game did get a LOT of play over the weekend.
Here is what I think is the relevant part of the schematic. Thanks for any help (I was going to IM you 'fredsmythson' but didn't want to seem presumptious!).