Hummm..I would would have thought that both the primary and secondary are adjustable on any classical cass except the peculiar system used for the Tak CN-212 which has a movable mirror.
Ed, My mistake they are there just not where I thought they would be. They are actually on the grip ring where the the focuser attaches. I hope I never have to adjust these.
When I first received it I did a collimating with a Cheshire and got excellent rings.
However when I finally got a clear night the star collimation was off more that I would have thought it would be.
It took a bit of tweaking on the secondary to get it right.