Probably an old dob mod upgrade method, but thought I'd share.
The Orion XT8 base teflon on laminated pressboard azimuth motion was functional, but slightly grabby at times.
Ordered a slimline lazy susan (that some mass produced dob manufactures use) from Rockler. Just replace center azimuth bolt teflon washer with the lazy susan and reassemble with proper bolt tension. Outer teflon pads remain, no need to remove.
Whole lot smoother motion without the grabby sensation.