You don't get the point... and I'm not sure but I feel some aggressiveness from your side. I hope I'm wrong. Say I collimated at a 45 degree angle. First, collimation will move as I'm balancing the scope. Say I collimate after i slew to the target right before imaging, I'm sure collimation will move as the mount tracks. I'm also positive that if I collimate at a 45 degree angle and slew the scope up to 70 degrees, collimation will move as well. Change in collimation might be smaller in that case but still it's not ideal.
Don't be so sensitive. IMO, Havasman gave you good advice. Had you not rather given the collimation drift that it still remain within tolerance?
If your primary cell is good and well secured to the OTA, your edge supports are sturdy, properly spaced and at the COG of the mirror. Stiff springs. Havasman's and others advice is about all you have to try. You may be "happier" surprised.
I had a steel tubed newtonion on a GEM that was loose all over. Focuser, secondary, primary. I would alternate with an autocollimator, combo tool and laser while moving ota in all it's various positions to track the problems. I got it all tight, no play. When it came to the primary flopping around, I made some steel edge supports, placed them 120 degrees apart at the center of gravity of the mirror and added stiffer springs. No more movement.
Try not get getting so frustrated that you can't think it through. It's easy to do. I have forgotten, but I believe your scope is a dob. Just be glad it's not on a GEM like mine was. If I wasn't so cool, calm and collected, I'd have probably gotten upset myself. Good luck.
Edited by airbleeder, 07 December 2018 - 05:33 PM.