ACME Rod Rubbing on Spindle Mount - Any Fixes?

Yes, that’s the bearing I used.
The bottom of the ACME screw is turned down to 8mm to fit the bearing.
I’m not sure if the standard X-Carve ACME rod is turned the same way, I got my rod from 3dTek along with the bearing - and all the other parts I needed for the X-Carve.

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