I need to paint a stainless steel fuel tank like the one in the link. Never painted over stainless before, anything special I need to do to get it to stick? Cover coat will be a Dupont ful-thane. https://www.speedwaymotors.com/EMPI...MIuYnu7oyR4AIVkHUBCh3DGA_qEAEYASABEgKHRfD_BwE