I have two UP-130s and a UP-165 in my shop manufactured in 2002. They are mostly in pretty good shape but their paint is flaking and their cast steel frames are rusting. How does one go about repainting a robot? Can I just mask the zircs, connectors, labels, and witness Marks and go for it with a coat of rust primer then Satin Black Enamel? Is it ok to paint over servos and cabling?