On the verge of buying a beast of a bass, a T-40. Couple of questions. It's missing a few little itty bitty pieces, (one knob), all esthetic stuff. Are official parts easy to find? I've looked on eBay but none are up right now. The other thing, is how do i date the thing. I've got the serial number it's 00345440, i just can't find any place online to date it for me. I assume it's 80 something but can anybody help me narrow it down.