Hey guys, so I own a Takamine acoustic/electric, EG330SC, and I've been having this problem with it for a little while. So, I have some strings on it, pretty light strings, and after a while the high E string, as I work my way up the fret board, starts to get more and more flat. All the other strings are fine, its just that one. Now, I've gone and bought new strings a few times, and each time, the high E is perfect again, and its just after a while I start to notice high notes on it sounding flat. Anyone have any idea what the deal is? Should i bring it in to get checked out? And its not like its a half note flat or anything, but it can be significant.
Have you verified this with an electronic tuner?
It's probably more like your thicker guage strings are going sharp as you play up the neck, as it takes more pressure to hold them down against the fret(s).