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Making progress (of sorts). Took it all apart again today and removed the mirror clips and put them back with at least one mm between the lip and the surface, don't know how I can make them looser. Collimated it again, and it seemed perfect. I tested it tonight and it's much improved at higher power but there is still a slight tail on the stars with the 6mm eyepiece - which wasn't there before I started all this.
I did the "Star test" and the collimation seems great. Sadly, I now have a new problem, my wonderful GSO 2" 30mm Superview eyepiece will not achieve focus now. If I raise it up in the focuser about 5mm above the lip it will achieve focus, I can only assume that this is because the upgraded springs are longer and have altered the focal length slightly. Not sure how to fix that other than cutting the springs down or going back to stock ones. I don't want to get into a situation of stacking the coil in the springs. Any ideas?
Starting to wish I hadn't started messing around with something that was performing perfectly.
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