The old EQ6 , later NEQ6 and recent EQ6-R mounts have similar worm gears and have similar adjustment screws on Dec and Ra axis
The later EQ6-R and AZEQ6 mounts have Ra and Dec drive belts not gears
If your Dec or Ra axis is stiff when rotating with the clutch released, you can adjust this ( tighten or loosen ) as well to make balancing your rig easier
See link
https://m.youtube.com/watch?v=0yzFTjlpZaI
Cheers
Martin