For the past couple of weeks I've been trying to repaint my truck with some trunk spatter I bought from Ames. I cleaned the truck multiple times before spraying and when I layed down a coat of gray/white I got huge brown spots all over the trunk. Has anyone else had this happen or is the lucky sign I was born under doing it's thing again? At this rate I'll have about 10 cans in it and a coat 4 inches thick before I manage to cover all the brown!! WTF?!