Researching Jazz bass neck contour profiles (1st, 12th, variance) for a new neck.
Vintage Fender Jazz basses have a thick 12th fret profile - 0.97” to 1”, 0.18” to 0.20” variance.
Modern Fender necks have a 0.10” gap, and the boutique neck makers have a 0.07” gap.
Some online comments:
* a...