Prekote takes a whole lot of scrubbing, it took far longer than I had anticipated to get the nose ribs prepped. I started at 3 in the afternoon and finished at 11 PM. Priming went quick the next day once I got my gun dialed in but I got a couple of runs when I stepped on my air-hose.... Primer is Poly Fiber EP-420 I chose it due to reports of extreme durability from other builders.