I have the front bench seat sliders out to paint them "while I'm at it" (I have the seats out anyway...). After I blew out all the trash that was inside the rails, they do work "ok," but they do get stuck every now and then and there is a bit of rust in there on the slider and on the ball bearings or maybe just on the little metal piece that holds them in which is now spread around. It would be great to clean all that up and refurbish the whole thing. Problem is...it doesn't look like these were ever made to come apart again. Does anyone know a trick to getting these apart without destroying them?