Does a '62 P-bass have "backwards" spinning tuning machines? Did Jamerson really have to turn his tuning keys backwards to tune up for all those hits? I bought a '51 CIJ Re-Issue and pulled the tuners because I couldn't stand them, but thinking of using them on my Funk Machine "tribute" if the above is true. Also, if you're bored and can tell me: what period of time / models did these backwards spinning machines start and end with? I'm so used to the 70's stuff... Thanks!