Kurt, I found this site helpful for dissassembling my GP-DX. http://arnholm.org/astro/gpdx/index.htm I've had my mount apart in the past for all sorts of reasons as its third or fourth hand. I've installed original Vixen encoders I managed to track down, repacked the worm assemblies for backlash improvement and installed belt coupled micro-step motors. Going the next few steps to address the load bearing surfaces has been a bit like pulling a carburetter down ie a lot of parts, but I do not think it has any effect on drive accuracy. The link above suggests no periodic error improvement can be expected with a full regrease. I just got sick of the excessive torque requirement toward the end of a winter session when doing manual goto - I don't think it bothered the motors, they seem to have plenty of torque, at least at the goto speeds I'm happy with. Thanks for your thoughtful comments on the grease. Cheers and happy new year, David