If you get to that point use a foam brush. I used semi-gloss black tremclad (rustoleum) to seal the bottom of my dart and put it on heavy and it self levels and basically leaves no brush strokes. Wouldn't reccommend it for visible body panels maybe, but for floor and underside and where it is less visible it worked great.
Looking good by the way. Making good progress. Looking forward to seeing it all come together.
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