[raymo]

I have traced my tracking problems to the hand controller, and have bought a new V.4 one, but now have another problem. When tracking
with the counterweights pointing east, all is fine, smooth and quiet.
When tracking with the weights pointing west, the motor noise is normal, but every 10 to 20 seconds there is a loud sort of crack audible from at least 10 metres away, which I can just feel if I have my hand on the mount, so something seems to be slipping. As there is a little backlash in R.A. I thought that the R.A. worm might be moving longtitudinally, but it could only do that once, not repeatedly. Pushing lightly,or heavily, with or against the drive motor makes no difference. None of the gears are slipping on their respective shafts. Anyone else had this problem?
raymo