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Brain surgeons have it easier. However, brains come in all different shapes and sizes , just more variables than scopes.
Regarding your collimation, the one I once played with was by making the push/pull at the edge of the mirror cell and orthogonal. This gave me two points for X-Y collimation. Each of the collimation bolts were allen headed. Since collimation was to be done from the front of the scope, the bolt heads faced that way as well. I made up long rods (about 1.25 metres) with one end filed to fit into the allen head and spot welded them into position. The rods were held captive at the front end of the scope by small tabs with a hole drilled through them. Two small black anodized, knurled volume knobs were put on the ends for grip. Collimation could be done at any time through the night without having to crawl under, or kneel behind the scope.
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