looking at wiring diagram...
Bill,
Here is a snap shot of your wiring diagram. Is this how it was wired before - or does this reflect how you have moved the generator wire now to the other side? The four posts on the older solenoid, was simply a way to get the standby power to the system when the master was off - solenoid relaxed.
This is a very strange problem - then again, electrical issues are always a challenge. Are you able to check to make sure the diode on the positive side of the solenoid is working?
Jeff
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