[fuso (Anthony)]

Hi guys,
I have a 2nd hand 8' Dob which seems to have a loose focuser.

This is very frustration. cus when I put my laser in for collimation moving the focuser up and down the laser beam also moves about 2 cm.
The only way it seems to stop it is when I tighten the 4 screws near the R&P and also lock the screw at the top of the focuser (I don't know what that screw is for)
It reduces the shift/slop but the affect is a very stiff and hard to turn focuser.
Any tips on how to improve my focuser would be greatly appreciated.

Thanks Anthony