I have a 77 strat with the original nut. Appears to be synthetic. I've never had a problem with it. I assume that Tele's from the same period would have used the same nut/material. However, the bridge has been decked from serveral decades, so I don't know if the nut has good properties re staying in tune with the tremolo (vibrato) bar. Anyone know what material these nuts were made from?