Hope I'm missing something obvious here, but my GM811 guiding has recently seemed impossible to get sorted. I have occasionally been able to achieve 0.5" guiding, but more typically 0.7"-1.2" with current configuration. After breakdown of RA and Dec, replacement clutch pads (Hermann), relube of all bearings, adjustment of worm meshes, gearbox, PEMPro RA 2x worm PEC, etc, I still can't seem to dial this in.
A sample screenshot shows a regular whiplash of DEC, with repeating spikes, which to me indicates some regular periodic roughness of worm gear on the DEC axis? DEC is swinging back and forth here. Could DEC also be affecting the RA numbers?
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DEC seems to have slight visible play by hand; clutches are tightened about ? turn past touching. Nothing too different than ever.
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OTA is an SVX140T about 28 lbs with 29 lbs counterweight. Am using an OAG at the scope's FL of about 938mm.
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Is 57 lbs past the limit of the G8 DEC perhaps?
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Any thoughts on what to try or adjust??
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Dale
