A customer who plays a lot of shows and does lots of recording, too, sent me two of his 4003s to recondition and set up. They both got a real going over: stripped to bare carcasses, all fasteners replaced with stainless or new, corroded parts replaced with new, full setups, bodies buffed and waxed, electronics checked, solder joints touched up, frets leveled and polished etc.
He's had a problem on stage with the mute engagement knobs. Be cause he perspires heavily, the factory screws had corroded to the point where he had to use a pliers to raise and lower the mutes on stage--not an ideal situation. Additionally, on one bass, he turned the screws too far one evening and the mute dropped into the body cavity, and had to be retrieved and refastened--a hassle for him.
Here's my solution to his problem--a pair of stainless steel thumbscrews, backed with nylatron washers. Nylatron is graphite-impregnated nylon, so it's self-lubricating.
After securing the mute, I added some super glue to the thread ends so it would be impossible to unscrew the mutes all the way without real effort--a reminder that the screw was approaching the end of its travel. Now, even with sweaty hands, a couple of quick turns of each thumbscrew, and he's set for the next number.



