15-bucks on eBay won't get much. The exterior chrome will clean up with 0000 steel, but I couldn't sleep knowing rust never sleeps. Got lucky and found a vintage quart of Sherwin black Acrylic Enamel (contains Xylene Toluene & Lead!) in the paint room. That ought to stick. Next day it's not raining here in NEPA, gonna swab some in those tubes.