Greetings. I think I messed up my CC8. In trying to remove the secondary mirror to check a suspected smudge, I did not document the positioning of the mirror on the threaded attachment that sets the distance between the mirrors and as a result it seems to not be focusing correctly. Collimation was redone and looks fine on a star test, it just won't focus. In reassembling, I screwed the mirror all the way down onto the threaded attachment and locking ring, but from what I remember, I think there should be a gap where the arrow is where the mirror isn't all the way down. Does this distance make any difference in focus quality?
Just to be sure, if I could ask a CC8 owner(s) to take a quick measurement for me, that would be very much appreciated. Please be as accurate as you can. I have calipers in metric and digital inches, so I can be very accurate. Even a photo would be helpful. Thank you, thank you, thank you if you can help out.