I have a bass that has developed an annoying buzz in the past couple of months on the open E string only. It sounds like it is coming from inside of the bass. I don't see places where the bass has come unglued, etc. What are some good places in the Dallas metro area that I can bring my bass in to get looked at? I'm wondering if it might be my soundpost. When the bass is held perfectly upright, is the sound post supposed to be exactly horizontal to the ground? It doesn't look like it is on my bass. I'm not near my bass and I don't remember if it was the front side or the back side that was higher... Thanks for you input.