I just received shipment of a new Ned Steinberger CRM 4-string, with the stand. When I mount the bass on the stand and play it, there is a rattle that I think is coming from the screw mount that screws into the back of the bass. Has anyone else had this problem, and is there an easy fix? I will call the shop that sent it to me but I thought I'd ask here as well. Thanks in advance.