My neck is warped I think. At the 1st and 2nd fret, the strings will make a muffled, dragging noise, but I look down the neck, and it looks straight. Is there anything I can do to straighten it? Someone said turn the allen head on the end of the truss rod, but he also said that could break the truss bar and consequently break the neck. I didn't want to do that. He said to let a professional at like a guitar shop to do it. Any advice? It's really bugging me.