I used a lazy susann similar or same to the doitbest 12" on a 6in dob no col. I found the movement sporadic at best, the ball bearings tended to bunch up, and teflon spray did not stop the bunching. I did not try any thick grease as I did not want to attrack dirt.

Went to new Virgin Teflon pads on the 6. Works well.

Several vendors have been offering virgin teflon pad and true ebony star laminate kits (one among them is scopestuff.com az kit ). There have been some threads in CN forums about applying ptfe pads and ebony star to xti intelliscopes with col.

Just my opinion, but, I think the ptfe and ebony star will give you custom dob az motion, as many use it for the az, and ebony star laminated to the alt beartings.

I just never had any luck with the hardware lazy susann approach, it may have been the weight of the 6in, dont know.

Good viewing,

Dave