Carl, I looked at that. It does not seem to be binding, but I could not get one of the motor mount screws out. I also do not understand how tilting the motor will help, since it is between the drive gear and the gear for the smoke piston.
As additional information, I have been cycling the chassis on my work bench. Many times it will run fine/fast (but not as fast as with the Williams E-unit) but many times it will start up slowly and continue to run slowly. Some of the triacs are hot, but cooling them with circuit freeze spray does not affect their operation.
If this thing had relays in it, I would suspect occasional poor contact at the points, but I am stumped. It definitely seems to be the E-unit. I'm eying a similar one removed from a Burlington FT a few years ago.
