Friends, It looks like one problem conquered, another one shows up. Well, this one's been alive for awhile now. I've been having a hard time intonating my G string. Intonation at the bridge is all fine and dandy, but when I play any chord that's on the upper five frets, it's bothersome. An F chord, for example, is very prominently out of tune even though the G string is in tune open. When plugged into a tuner, I can see that the second fret A is very sharp even though the open G is fine. It looks like all of my other strings are a little sharp to an extent when fretting, but they all sound fine. I've been reading around and some say it's because the nut is cut a little too high. I don't know how true that is. I've measured the nut and it's up to par with Gibson's factory specs. Everything else is setup to my liking: truss rod, bridge, etc., and the only thing I don't know how to setup is a nut. Any thoughts? Thanks in advance for the replies.