How do I know what the correct zero position for my tremolo is? It's an Edge Pro. I've heard that it needs to be parallel with the body, but the tremolo piece itself has kind of an angle to it. It has a little line on the side of it, is this what I use for my guide in making it parallel? It's currently set so the line is parellel to the body, but then the rest of the tremolo doesn't look completely parallel. Sorry, if I had a camera I'd take some pictures to illustrate my question better. Maybe somebody with an Edge here can help me.