Not sure if this applies....but on my ft-130, the neck ended up crooked. I took it to the fret shop here in huntsville. They took the neck off, shimmed it and put it back on. Now the fretboard is about 1/8in. above the soundboard. had lots of tension on it before. now it sounds better, plays better.......but yeah. Ive seen lots like that. seems to be a rather common problem.