After re reading my post of last night, I want to add this.

I think that Before anyone does any serious base modification that will alter the spacing between the Az encoder board sensors and the magnetic disc, that they really examine and get to throughly understand the mechanical relationship of the rotating disc and the pick up sensors.

Hold the board in your hand and observe how the magnetic disc rotates above the sensors on this board, and note how close the disc magnetic surface normally comes to touching these Az board sensors!

After reading this long thread, I was frankly amazed that no one has picked up on this very common problem, and added any comments!

It makes me wonder just how many have actually done any serious modification to the Intelliscope base azimuth movement, such as adding a roller bearing system to replace the existing Teflon Az sliders.

I have done so, but have found that the adjustment of same is so critical to avoid damage to the azimuth board sensors, that I will not post this Mod.

The problem that I described is an accident just waiting to happen, and should probably be permanently attached to this Reflector Forum!

I hope that I've helped some Intelliscope owners from damaging their COL function!

Cheers
Bob