I picked up some Redding comp dies with micrometer seater. The dials have some very light rust on the knurled handle. What do you guys recommend to remove it with without removing original finish? Can I clean the micrometer head in my sonic cleaner? What does everyone use to coat their dies with when they will be stored and not being used? These dies are calibers I don’t have but plan on getting later down the road and could not pass up the price. Any help is greatly appreciated.