Use a Bigger Hammer

My repaired clock drive arrived yesterday.  Part way through reinstalling it, it stopped supplying voltage to the motor.  The power switch and rheostat assembly is one of the chunkier aspects of a very nice piece of work.  When putting it into a barely wide enough window into the aluminum frame I must have knocked something loose.   So I took it out,  tested every contact to contact connection for continuit, checked everywhere that should have 5.11V.  Everything worked.   This time I slid it back in very carefully,  verified voltage at every connector before the motor.  The motor terminals showed 5.11V and the motor started purring.  Once I get all the screws back in, I will start it running without the telescope on it.   Putting it back on the platform and then taking it off again is a lot of work!