hey all, i know there are other threads on this. but none seem clear. i just got a USATK bass, and i really dig it. but i can't figure out this neck. i've actually taken the neck off the bass because i couldn't access the hex nut while it was on.. it appears to me that tightening the bolt introduces more bow. I want to get the neck straight, or nearly straight. is there a way to do this? is heat treating it an option? let me know!