Skywatcher EQ2 tripod and mount

[Benj]

Hey

Quick query about the "connection" between my Skywatcher EQ2 tripod and the GEM bit. Even when I've got the screw as tight as I can that runs from the underside of the tripod baseplate into the GEM it's still pretty easy for the mount to spin on the tripod, particularly if I haven't loosened the RA clutch enough when I go to move the OTA.

And that obviously mucks up any polar alignment I've got which is super annoying. 

Is there anything I can do to get the tripod baseplate/GEM connection less slippy? I was thinking maybe gently roughening the very smooth coating that both mount and baseplate are finished with? Or attaching thin rubber or cork to increase friction?

Cheers for any advice

[Dr_Ju_ju]

Have you tried a washer between the screw & base, to pack it out a bit so that you have some additional 'meat' to tighten up on ?

[Benj]

Good shout - I'll see if a spring washer/washer combo of some description will help

Thanks