Hello all, touched on this in my build diary, but thought I may find help here. I'm building a 7-string multiscale kit, and the neck seems to a degree to the right (I think). Here's why:
First, when the neck is fully seated, there is space between the tenon and body on the left (low B) side. It gradually narrows and closes on the right (high e) side.
Second, when the neck humbucker is in, there is space between the fretboard end and the humbucker on the left side. Similar to the tenon and body, it narrows until there is no space on the right. In fact, I have to pull the neck out to fit the right side of the humbucker in. Meaning there is even more space between the tenon and body beneath on the left, and now there's space on the right.
Third, when stringing up the low B and high e strings, on the low B side, there is less than 1/8" of space between the string and edge of the fretboard binding at the first fret, 1/8" at the 5th, 3/16" at the 12th and 1/4" at the 24th. Should be expected, as the fretboard gets wider. But on the low e string side, measuring where the low B hits the same frets because... multiscale), it's about 5/32" from the edge of the binding at all of the frets. The nut starts the high e further from the edge than the low B, but shouldn't the space also gradually increase too as the neck gets wider?
Some pics of tenon to body joint, where the humbucker meets the neck, first and 24th frets with B and e strings on: https://imgur.com/a/Xe2IjGE
The only solution I can think of is to sand the left side of the pocket so the neck can be angled a bit to the left. The neck fits nicely as is, really tight, just want to make sure there's not something I'm missing, I don't mess it all up... Or if I'm making a big deal of nothing.