Hey Leo,
Apologies for going silent to your two messages. I've been rather ill for the past week, but fortunately have turned the corner...worst gastro in my memory!
In any case, the EAF is packed up and returned. While there are issues with oversized holes on the bracket device that clearly wasn't the problem. Under no load, the EAF appered to have little to no observable (to the eye) backlash, but under load had uncorrectable backlash. Given the same focuser runs acceptably well with a different brand motor I don't see how the focuser could be at fault.
Anyway, I wasted quite enough time! Thanks for your input!
Peter
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