I've noticed that my strings can be perfectly in tune, but when I start playing scales and leads on the mid to high frets, the notes are a little bit sharp. Even when the string is still in tune. I checked with a tuner to confirm it. This is becoming irritating. I'm sure no one else notices it when I play, but I have a pretty good ear so it bothers me. Does anybody know what could be causing this?
I have an S2 Custom 24. I bought it a couple months ago and it still has the factory strings on it.