Yes, that is my hunch. Your problem is most likely somewhere in there.

1000-point-relay-circuit (resized).png

Also, check those score motor switches in that circuit. They are all “carryover/elimination” switches that are timed with 1A. Here is some good information from Gottlieb’s “Instruction & Service Manual” from 1964:

Motor 2C: This position is timed to the 2nd pulse from motor 1A, & is used to eliminate or carry over this pulse to other scoring circuits. The function of 2C may be to subtract the replay, step the total plays meter, reset a bank of relays, match (replay), or some other purpose that must time with motor 1A. This switch stack operates in the long position of the switch dog, while all the others are usually operated in the short dog position.

Motor 4B: This motor position is timed with the 3rd pulse from 1A and is used together with motor 3B. It is often used in the extra count circuit.

Motor 1B: Operates 4th in operational sequence and generally is used to time a scoring function. It can be used in series with other switches to eliminate or carry over the fourth pulse that would occur with motor 1A.

Motor 4C: This position is timed with 1A in the final 5th pulse. It controls match, scoring, extra chute count, bank reset and other functions.