Just got a glossy maple/maple fretless neck from ey guitarparts , it is about 1.5 mm to wide for the neckpocket .
Never sanded a neck before

Do I sand just the part that goes in the pocket or what ?
Dont care so much about glossy finish on the back of the neck but the unlined maple fretboard is really nice , dont wanna ruin it .
So - Anybody done this before ? -
Hints , tips & such is really appreciated .
Thanx
PJ