Hey Trevor! I did some very light sanding to the left side of the pocket, but not enough to make a difference. I've routed out the cavity for the pickup in a few spaces so that it's at the same angle of the end of the fretboard, so that fits fine.

I measured each end of the nut to the center of each string and they both are about 1/8". However, on the fretboard just below it the low B is 1/16" from the left edge and the high e is 3/16" from the right. Maybe the nut was glued on unevenly? I can feel a hair of space where the nut is proud on the left side of the fretboard and recessed on the right.

https://imgur.com/a/RBeUHP2

Thanks for your help thus far!