Hi there. Recently had to take the neck off my japan 62 ri jazz bass - from the early nighties according to the serial number. Truss road only accessible with neck removed on these. I discovered the neck is stamped 8-11 and was wondering what that stands for. Day and month? Bass should be from 93/94 according to the serial on the same neck, bought it used some years ago. Anyone has similar numbers on their necks?