Hey Gord, you're in BC, where did purchase your Endura? I have some Zero Rust, that I might use on the bottom. Wonder if that would be better than epoxy. That would just be for the bottom, I was going to paint the rest of the cab with PPG epoxy. Also, did you paint the underside the body colour or did you paint it black since you put undercoat on. I think what I am going to do is since I have the cab sitting on cowl with the bottom right in front of me for painting, is prime and paint the bottom first, then flip it up on the bottom, and paint the interior, and then the outside of the cab. Does that make sense? That way I don't have to rebuild my rolling cart. Although I may make it taller, it's only a foot off the ground now.