Thought I'd post on here before I go hammering away! I have the doors off of an old gas pump I'm redoing for someone. They are pretty thick metal. I have 2 coats of black epoxy under 2 coats of polyester primer, all over sandblasted surface. I have blocked it all and you can see my high and lows. Does anyone see anything that really needs to be worked out, or should I just do a light layer of filler and sand away? Any tips, suggestions, or ways you would do it?