Congrats on the new Dob.
Why bother removing the extra mounts on the primary mirror? Even if they are overkill they don't make any difference to the image do they?
I have never noticed my scope being squeky. Haven't used it in a while though. If you do find a crayford focuser that bolts straight on in place of the rack and pinion please post it. I have been wanting to change mine for a while but don't want to drill holes.
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