I've bought my Jackson a little over a year ago. I've noticed the high E string would sometimes slip off the fretboard, but I always assumed it was down to the fact the locking nut was mounted a bit over that side. Being lazy like I am, I decided to just wait until I changed the strings to fix that, but recently a friend of mine visited me and that was the very first issue he noticed right away. Worried, I decided to investigate. Placed the nut properly and even set the neck properly in the pocket. The problem was still there. But, looking more carefully, I noticed the strings sat perfectly in place both at the nut as at the last frets. Confused, I placed a straight long ruler on the side of the neck and look and behold, the neck was crooked to one side at the middle! Could this perhaps be fixed by tightening the truss rod? I don't have the key for it but I'll take it to the luthier when I go get my classical back from the setup and new bone nut and saddle I've ordered, I've noticed it also needs to be tightened a bit, but on the only thread I've found online about this, it seemed the neck is pretty much worth throwing in the fireplace in such a case... Any help and advice would be highly welcomed!