Rack and pinion focuser tilt issues.

[Ryan_86]

Hi guys, I'm wondering if anybody has experience adjusting a rack & pinion focuser to fix tilt issues. My stars are triangular and have eliminated sensor tilt and pinched optics. 

My scope is a Primalucelab Airy 65F with a hybrid 2 dual speed focuser. 

The tilt is visible especially when I slight tighten the foxuser tube focus locking thumb screw. I removed the focuser mechanism revealing two beefy looking grub screws. I back them out and gave a turn each alternating between the two until a gentle contact was made. This has cured the tilt but am unable to adjust the focuser tube as the grub screws are holding the focuser tube in place. If i loosen slightly to be able to adjust focus the tilt come back.

I've contacted Primalucelab but are unable to supply a manual. 

I'm hoping I've missed how to do it properly. 

Many Thanks 

Ryan

Edited December 5, 2023 by Ryan_86