EQ6-R owners club in Discussions - Mounts Posted Thursday at 17:25 On 11/05/2021 at 17:23, Grant Fribbens said: I have had my EQ6-R for a while and started to get issues like you had in PHD2 when I put on my GSO 8" RC. So I have decided to take a look and found that I could feel backlash in both RA and DEC so have tightened this as per the video which was done by Cuiv, The Lazy Geek. Then I also checked the status of the belts and sure enough found that using the hand controller on rate 2 had quite a lot of backlash on the RA belt similar to what this chap, Rosco Bird DEC backlash, had. So I adjusted the belt tension slightly (1/8th of a turn clockwise on the grub screw after loosening the stepper motor screws) and it has made it so much better. That's a great set of videos. Belt tension would make quite a bit of sense and I'll take a look at that for sure - it's about that time of year when I take the whole setup apart and inspect/clean/maintain it all anyway given we're now getting too bright to do anything much with DSOs! I've been doing alright in more recent times - I wonder how much those belts and the whole tensioning setup "walks" with temperature variation.