Working on a friends Bank Shot and suddenly the scoring motor keeps running. Scoring reels reset to zero and all the steppers seem to reset but the ball count stepper. It keeps trying to reset but once I pull the AX relay it will stop and you can play a game with normal scoring. But it will not show the ball count or count down. Also the 100,000 lights don't light up in the back box. I've cleaned and regapped the AX, CX and JX switches. What have I missed?