I have a Custom Shop Washburn. They come standard with the Buzz Feiten tuning system. I've just been tuning it the regular way, and wasn't aware until recently that there is a different method to tuning a Buzz Feiten guitar. It sounded fine being tuned standard as far as I could tell. Now I'm trying to tune it the proper way (finding the E note on specific frets of each string and tuning to that). Seems to work ok. But you're supposed to be tuning to the E on the 14th fret of the D string. However, when I tune that D string to the 14th fret E, it's flat as hell everywhere else. ?