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I'm in the process of assembling a MarkII. The thread on the shaft is too tight to screw the shaft nut on all the way. I've scaled the shaft and nut up and down, however, when I get the thread to fit, the bearing won't go onto the nut. If I get the bearing to fit on the nut, the thread is too tight to get started or on only a couple threads. Ideas? Suggestions? Here are my ideas:
Can someone reduce the wall thickness of the nut? I'm not very good at making modifications.
Reduce the size of the shaft threads without changing the rest of the shaft?
Change the thread to a more course one that is more tolerant of size variation?
Shorten the thread on the shaft?
The bearing on the nut in the picture will go all the way to the base if I force it.
Would appreciate any help as I'm at a standstill.