Well, mine does :-(
There are two basic approaches to collimation -
1) Adjust everything up tight and hope nothing moves when you tip the scope around
2) Keep it all a bit loose, and be prepared to recollimate 'cause everything is going to move.
I've chosen (2), mostly to avoid overtightening the optics. I predict where the scope will be pointing when I'm imaging, point it there and collimate it. Leave it sit there with the drives turned off until it's time to start imaging.
cheers, Bird
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