One other thing to potentially watch out for. The scope comes with 3 extension tubes. 2 short ones and one long one. On my sample, if you join a short one to the focuser - it has been machined in such a way that does not guarantee that the focuser will be square to the optical axis.
If you join the long one to the focuser it will always be square, but not guaranteed to be centered. (I think this is the lesser of 2 evils.)
I didn't notice any problem joining them to each other or to the scope.
If you take care when assembling it you should be okay.
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