Howdy; I have a 1969 era (going by serial number, not body or neck stamp) Fender Mustang bass. It currently has a badass bridge on it, but, I have the original bridge for it, which I'd like to re-mount. I do not have the proper screws to do this. Where can I find these? Also, the bridge has provision for the adjustable mutes, like the early Jazz bass also had. Can one still source those as well?