Thank you all for the ideas. I think I'm going to try Peter's idea of longer collimation screws and springs first. Depending on what I can find at the local hardware store.
10mm isn't a very long distance, but if 10mm (or even 20mm) more at the focuser would've done the job, that same distance at the primary would do the same thing, right?
This is actually kind of fun. Discovering a problem, learning ways of fixing it, then doing so.
