I prepped the airframe for the final rounds of primer. Every bare spot got 2 to 3 coats and heavier on the larger bare areas. Contour isn't perfect, but again that's going to be saved for when it all gets ready for the wrap. As you can tell in Pic 2, the batches of Grey primer are pretty different shades of grey. Instead of focusing on that I've decided to just blend them as best I can wet I sand it to 2000 grit.