Quoted from mdo1998:Could the issue be in the score wheels for Player One?
Yes, the wiper(s) in Player #1 Score Reel(s). I'm thing both the 10,000
and 100,000 Score Reels have wipers. You'll maybe want to recheck and
be sure the Wipers are making good connection with their Wiper Boards.
And of course check the Wiper Boards wiring.
I'd also make sure all looks okay and aligned on the Player Step Up Unit..