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Thanks Marc & Alex
Re EQ8:
The altitude adjustment has a big helical? gear with the shaft poking out the side.
A short bar handle is placed on the shaft so you can turn it.
It is very hard to turn and the mount can jump past where you want it.
To solve this problem, I found a piece of pipe about 600mm long to fit over the handle. This made it a bit easier to turn accurately.
The azimuth adjustment screws are a very coarse thread. It only takes a turn of a few degrees of the knob to make a big change.
I did get it right in the end, and the tracking error fell well inside the accepted norms.
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