Thanks Steffen. Yeah it is a process of elimination at the moment. The weight of the dec axis definitely doesn't help with the RA axis adjustment. I have found that if I do the RA axis first and just aattch the worm carrier for the Dec axis the mount is balanced and I can tune the RA well. I also believe the lock nut on the RA was a little loose so I have tightened it but it has changed the worm engagement so further tweaking needed before next test.
Lucas
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