I had Behr latex paint go soft around bottom of the cowl attachment area which was exposed to some raw gas spray. The paint didn't come of, just got soft and tacky. I cleaned everything up well and sealed the whole plane with Minwax oil-based satin clear. It yellowed the colors some but it doesn't bother me because it's a camo'ed warbird anyway. I used plain water to thin the paint. It sprayed nicely and covered well otherwise.