[rattle trap]

Any of you know what to put on SS props to keep from getting barnicales? over the winter not problem but now i have pulled out of slip and noticed sum...last year i tried the zinc chromate primer,and prop and out drive paint,but that just flaked right off
the zinc primer is for aluminium.....so i have been searching the net with not much luck,So with that said who has SS props
that are kept in a slip,tell me what you have done.......thanks!