So I tried the ammeter tuning method.
The mount was drawing 0.4 amps at idle with just the synscan handset on.
This figure rose to 0.82 and peaked at 0.84 as I turned the mount in R.A on rate 9. There is a fine line between there being no play in the axis and the worm being too tight and binding and making the belt slip. This figure didn't change noticeably as the gear tightened though...
I think the test would be to see if the PE changes with slight changes in amp draw but I'm doubting it.
