Using the tak scope is good but not the entire solution to the collimation resolution.
From your descriptions you could have warped the secondary holder and mirror just a little. You cannot tighten these things are really tight, just snug is the go.
I used the tak scope until I had it as good as I could then I did a star test that night with the camera in place.
Your focusor might have some issues too. Which focusor are you using?
Rotator - if Optec just check to make sure the back adapter is snug all the way around. It can be just a bit out and that will also create this sort of thing.
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