I have a older delta contractors table saw with the cast iron add on feed trays. The fence and the trays are old and starting to rust making sliding a board over them a challenge. What can I do about this? I was thinking sandblast the trays and have them painted and clear coated and same with fence. Does this sound feasible or is there another way to get this saw back to good working order? It was a hand me down from my uncle and I'm just getting into woodworking so any help with this would be greatly appreciated..