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Hi Bob,
I own both a classic 15 and UC22. First of all, what Mark said is right, the primary are suspended with a kevlar string. I scanned and attached my owner manual. You will have to setup the length once. According to my experience, when you move the scope (traveling to your observation site) the mirror will probably slide a little and the first step to collimate is to recenter it laterally. I do it from the back with a soft piece of cardboard that has to fit on each side of the mirror in the mirror box to center it.
To really enjoy it you just need to go through the same checklist each time you mount it and prepare it but these are super telescopes. For example, I numbered the truss pole to be sure to put the same tube each time in the same wooden block to retrieve collimation as close as possible and ease it. Another trick (as I am observing alone), I prepare a picture covered with plastic indicating how the triangle I use for collimation moves in the cheshire according the the collimation screws at the back to I don't have to think when I go back and forth from the cheshire to the collimation screws to adjust collimation (especially for the 22).

Enjoy,
clear skies, Frederic