hello all, I have an obsession mirror support question. I have an 18" classic, and it suffers from the (apparently) common ails of the mirror support, including a stretchy belt and sticky felt pads. I can get it collimated OK, and views are OK, but every so often when viewing I can hear a little sound (clunk) and the image shifts in the EP. Also, when I have the scope tilted during collimation, if I push on the mirror it moves easily, but it also often times shifts from one side to the other a few mm, and then says there. after some viewing, the central laser spot/ring has shifted from the center to near the edge (using the barlowed laser method). I'm guessing these are symptoms of both issues. BTW, the belt is adjusted properly, and the mirror isn't touching the posts (most of the time anyway, that might be the clunk). These sound like symptoms of the mirror support issues I have read about with these scopes, and I am interested in fixing them to the degree its possible with the existing frame. So I think the Glatter cable support upgrade is in order, and as long as I'm in there I think it would be a good time to upgrade the mirror support pads to delrin or acetal. The cable I think I understand, but for the mirror pads, do I just need to get roughly the same same diameter and thickness, and then mount them in the same location as the felt pads are? is there anything more to consider? any preference between silicone adhesive and the ones with posts? Those would need drilling, but I think I can handle that if needed. Does anyone one know of a "kit" or package that has the right parts that anyone sells? I could track down the parts on McMaster, but I would rather get the right parts from someone who has put some thought into it. thanks for all the great ideas on this forum.