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Jennifer, I have unbalanced it by small, medium, and HUGE amounts
both with and against the drive. No effect at all.
Ray, I have adjusted out almost all of the backlash, [couldn't quite eliminate it altogether without getting a tight spot], and cleaned,
inspected, and lubed the gears. They are level with each other, and tight
on their respective shafts. The intriguing part is that the problem only occurs when the weights are on one side of the mount; on the other side, it tracks beautifully. Every cracking sound causes stars to elongate
massively, so something is jerking, but when watching the gears
nothing visible to my old eyes happens. When the R.A. clutch is released the mount swings freely through 360 degrees.
I don't think that there are any relays Glen ;I think everything is solid state.
raymo
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