I have very little time on this mount. It is approx 6 mo. with about than 1 hour of operational time. I purchased it new.
Last night I was setting up to capture some photons for reals and noticed play in RA. DEC is fine. I have no means of measuring the play but I can say it is visible and I can feel it when I lay my finger over the surface.
I decided to use the worm adjustment procedure in Appendix D of the manual. Things have gone down hill from there.
I am no expert with mounts but have decades of experience with similar precision mechanical equipment and believe I am competent to make such adjustments, especially after RTFM.
I am using the term "set" screw to mean the 2mm screw. The "lock" screw is the 3mm screw.
1: I found both set screw and lock screw tight.
2: I loosened the set screw and it felt normal.
3: I began tightening the lock screw by turning it CW in small increments. The lock screw felt moderately tight and yet movable with intention. During the adjustment increments I could feel no change in play.
4: After about 1/2/ turn with no discernible improvement I reversed direction.
5: Continuing similarly in the CCW direction I encountered stiff resistance to the point where it seemed inadvisable to continue.
6: I reversed the lock screw back to its approximate original position and tightened the set screw.
Seeing no improvement I tried to GO TO ZERO and the mount didn't move. I the tried a SEARCH ZERO POSN. The mount now make a high speed spinning noise. Having done enough damage for one night, I shut every thing down and covered up.
I have two questions:
* Why did my adjustments have no effect on the worm adjustment?
* If the worm mesh adjustment is not the source of the RA play, then what is?