I have a USA made Fender p-bass. I bought it second hand about 18 months ago, but it is quite new. No more than 5 years old from my investigations, and it had barely been touched when I bought it. I'm in Japan and there are very dramatic seasonal changes in temperature and humidity. So every time the season changed it needed to be readjusted. I know nothing about the hardware aspect of bass guitars so I just let the guy at the shop do his thing. It looked like all he was doing was adjusting the truss rod. When I took it in recently though, I was told that it could no longer be adjusted. The only way to stop the strings rubbing on the frets was to file the frets down. Does this sound right? The price I was quoted for filing down the frets is about 180USD (equivalent). This sounds like bull. This is supposed to be a quality instrument and only a few years into it's life I can't even adjust the ******* truss rod?! I said I wanted it back and I'd think about the fret filing option. It's barely playable now though. HELP!!!