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I've got a reasonably new CGEM. It was quite sticky in RA and hard to balance. I was hesitant about fiddling with it and was considering the hypertune kit (but it costs a lot for what you seem to get).
So a few weeks ago I pulled it apart, cleaned, polished and re-greased with superlube. Its better now - I can actually balance it; guiding might be marginally better (although I haven't has a lot of time to test this fully - and I'm a bit of a noob at guiding).
After doing that I'd have to agree with casstony, don't consider a belt mod. Try and adjust it, or move on to a better mount.
- I don't think the cogs from the motor contribute much to backlash. Its quite simple to adjust their position so they mesh well.
- Most of the backlash seems to come from the worm gear. That can be adjusted to some extent.
- And there seems to be quite a lot of backlash in the motor gearbox (inside the motor casing - but I didn't pull that apart).
If anyone has other thoughts on improving these beasts ?
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