Pun intended. I've got Jazz Bass that I want to restring with the top 4 thickest strings of a 5-set (so B-E-A-D instead of E-A-D-G). I currently play an entry level Yamaha with the same setup and I didn't think to file down the nut to account for the added width, it seems to have held up perfect, no shifting or ill effects on the guitar otherwise and I've been playing it like that for almost 2 years. Should I worry about filing down the nut on my new Jazz? I want to keep the setup permanent.