Should have said tailpiece. Here's a pic from my old CH12. The tailpiece should be flush against the body, although in the pic you can see it's slightly raising on the left. On the black one I returned, the entire tailpiece was lifting almost 1/2" up on a 45 degree angle. The four mounting screws just turned in the ferrules. At least they weren't popping out but the tailpiece was lifting as the bass was tuned to proper pitch. I've had both a CH12 and a B12L in the past. The basswood of the Korean CH12's is fairly soft, unlike the B12L's.