As I work issues with my pin, I come back to this problem periodically that I have never seen before and just can't get a handle on it. I get 5 pulses from 1A and manually actuating "G" or any switch only registers 4 points.

It's hard to count the jumper light on the motor but it looks like 5 pulses and the 1/3 rotation also indicates 5 pulses from the points on the cam. But at the score reel I see only 4 pulses with my jumper light. It is consistent.

Any ideas where the missing point is? Thanks all for considering this mystery.

4 points, not 5 (resized).jpg

It's so obvious when somebody points you in the right direction. Many thanks to all for your help.

My Gottlieb doesn't have a motor service disconnect (I'm going to add one) so I unsoldered the motor power. Turning the motor slowly verified 1A was pulsing correctly. Watching 2B it was so clear the switch was opening too soon. A little bending of the blades and all is good.

I hope that my knowledge grows so one day I can help others.