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Thanks Guys
Hi,
Thanks "Blue Skies" & "Glenhuon" for the advice, I will concentrate of the secondary first before doing the primary.
How did you go about shimming the focuser tube Glenhuon? did you place the shimms in between the focus tube and the holder? Or where you shimming the focuser mount screws to centre tube properly?
I have a smaller scope, 4.5" that had a lot of play in the focuser tube but I rectified this by wrapping thread tape around near top and bottom (above and below rack) and placed adesive tape between to each side of the rack and has lasted quite awhile, good quick fix.
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