i just noticed my jazz bass's neck cracks if you push against it hard enough, like hold the bottom horn and pull up on the neck, *crack!* and hold the top horn and push down*crack!* ive noticed that i can fit a pick between the neck and body at the place where the neck meets the body(joint?), its actually pretty nifty and efficiant rather than putting it under te pickguard and possibly cracking it, anything i should know? id just steer clear of trying to crack it. ps: we call my dad's univox hi flyer "the noodle neck". you can simulate a tremelo by holdin the neck tight in a chord and pressing your forearm against the body and pry with your left hand with little to no effort and it sounds like you got a tremelo.