Not sure if I'm posting in the right section but anyway.. I just bought a new Jared James Nichols 'Old Glory' Epiphone LP last week. I got the tech to put on a bone nut and set it up for C standard with 12-54s before even picking it up. Everything is good except for the G string which constantly slips out of tune and also it doesn't sound like a whole note almost anywhere on the fretboard(8th and 17th fret are probably worst culprits for sounding 'dead'. This is frustrating as I thought the bone nut would deal with tuning issues. Does anyone know what the problem could be? Every other string sounds good and stays in tune.