I had to put a new nut on an L5500 neck that I had for awhile- FYI: Fender 5 string nuts are the right length and thickness (at least for the 1 7/8" nut width), I bought one from
www.guitarpartsresource.com- though I had to file it down quite a bit to get the right height. No matter what, you should have a luthier/guitar tech file the string grooves to give you the optimum string height (unless you are confident in yourself to do very miniscule measurements!)- might be best to just find a place to carve you a bone/synthetic nut to fit, any luthier should be able to do it for you. G&L is the best source for the screws, unless you are lucky enough to find a hardware store that carries specialty machine screws like those.
Karl
