I just acquired a Fender Deluxe Jazz 24. The neck is really "clubby" and the thickest neck of all my 10 Jazz Basses. (.90" from the surface of the 1st fret to the back of the neck) I'd prefer .75" or even slightly thinner. It's a "U" to "D" shaped neck carve and feels like a baseball bat in my hand. I love the bass otherwise and want to shave the back of the neck but have heard there could be truss rod issues if I remove too much material. How much can I take off safely?