i had researched this a while back 'cause nail polish didn't work
but never followed up finding the proper primer . . . galvanized metal-etching spray primer. http://www.ehow.com/how_8390194_paint-snap-clips.html http://www.eastwood.com/ew-self-etch...16-oz-net.html
i was planning on visiting our local auto parts store . . . or visit a auto body repair business to see what they said . . . with the hopes that they'd do a few for me!