Hi Daniel. Awesome work you're doing! I built a 10" truss dob and was having an issue regarding the focuser to secondary. I came up with making the secondary section independent of the truss to allow more or less focal length.
By loosening the clamps I can also remove and rotate the secondary section.
I also converted my 12" dob to collapsing type which makes it easier to allow for focusing issues and is great to transport around. I hope this helps
