baldtwit Thank you for taking the time to do that diagram.
The diagram is correct. A & C have a notch that line up with each other. A has another notch opposite. B has two notches opposite of each other, neither of which line up with A or C.
The motor switches seem to be opening and closing as they should. They've been cleaned.
Yesterday when I was done, the motor cycled once at the start, and the shutter shut and opened back up when the gate switch was triggered.
However, this morning, at the start of the game the motor cycles several times before stopping and again several times when triggered by the gate switch. Also, sometimes the motor cycles several times upon power up, before the game is started.
The lock relay shuts when the game starts and stays shut. The switches on the lock relay open or shut as they should, including switch with (35) and (45) on the blades.
It sure seems like something isn't making a good connection. I've been cleaning the switches with a business card (rough paper) and alcohol. Should I re-do with a light file?