I just bought a Fender mustang reissue it is used but the friend I bought it from bought it new and I don't think he played it more that twice. So I consider it new, I have adjusted the intonation straightened the neck and taken the buzz out of all the strings but for some reason when the low E is tuned the first 9 frets won't be in tune they are all sharp. I don't know why this is happening any suggestions?