[JA]

Originally Posted by dizzy2003

@JA

It has a rowan mod.

That may have been helpful to know, but mostly the same applies in terms of physical checks, other than to suggest checking the belt tension is not too low or some possible belt damage.

Originally Posted by dizzy2003

I happen to have been down this road before back in april, where I tried to use a time lapse mode on my phone to look for issues filming the gears.

https://www.youtube.com/watch?v=MLZM-2pWufk

I think that was like 20 mins of realtime but cant remember.

I think I need to try doing this with the mount loaded up, maybe for a few more hours. I think I came to the conclusion that the errors are too small to see anything going wrong, even timing rotations.

Will absolutley double check the grub screws on the motor drive shafts are tight. But I did try (months ago) swapping the ra and dec motors without any benefit seems unlikely boath would have been slipping but who knows.

Thanks for all the advice so far BTW..

Mike.

I agree that's why I suggested it is more likely there's a common cause such as electronics / power or supply

Best
JA