This may be a dumb Question, but how many Mhz, is your tuner suposed to be calibrated to. I have a small hand held Korg Tuner that I have owned for 4 + years, and has always worked fine. However, recently I belive the calibration is out of wack, and it doesnt tune my bass corectly anymore. I have never had to deal with anythign liek this before, and I'm not in the mood to buy a new tuner. If someone could help me out, that would be awesome.