Hi Guys, I was cheking my recent bought 1979 Fender P Bass and has some question about the pots. I have never seen the original Fender pot with a plactic shaft like those on this bass (both pots). The production number on it seems alright. Wonder if this could be original The impedance measured on both pots were over 250k, maybe 850k. Should I better replace them for a better sound. Thank for your advise.