All I can say is PREP your surface. PREP PREP PREP. This kit mixes with no problem and sprays out perfectly. The color was spot on what I was excepting and looks amazing. Although it dries to the touch within 15-20 mins give it a couple of days to fully cure. The slightest bump prior to full cure peels the surface back. I ordered a gallon kit for my TJ tub and had one left over which I use for touchups.