Bill, I know that I’m stating obvious but from my experience it is better to check obvious things first.. I got GS mount converted to work with Autostar. Few times tracking and Goto went crazy. After blaming everting possible and impossible I found twice that the clutch was slipping because I did not tighten clutch lever sufficiently. One time the power cable got tangled on the tripod leg and once my battery was just about to die and voltage to the mount was only 9,5V
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