I have a MusicMan JP6, it's about 5 years old. A couple of weeks ago a string snapped while I was playing at home. I didn't have time to change strings and I left the guitar it in the case. I meant to change it the next day, but I had a lot of stuff to do so it ended up lying in the case with the C-string missing for about two weeks. When I finally got to put on new strings and was adjusting to get them all in tune, I noticed that the strings were too close to the neck. I have tried to raise the bridge but it doesn't help. It just gets more unbalanced. So I guess it's the nut that's broken? And could this happen simply because it was lying with one string missing? I just had the guitar on service about 2 months ago to fix the whammy bar and he said that everything else looked fine.