My paintjob was less than stellar for two reasons, and both of them were my fault. First, sand scratches were visible through the paint; second, the finish had a lot of orange peel. I put the scratches in there when I sanded the primer prior to painting the car by attacking it with 400-grit dry paper. My belief was that 400-grit would give the topcoat more tooth to stick to. But this primer does not sand well and it clogged the paper. Dragging the clogs across the surface left gouges in the primer. Again, this was my fault, not the primer's. According to Valspar's instructions, if it is mixed with more reducer, it acts like a smooth-sanding filler primer. But mixed with less reducer, it acts like a sealer, giving it a harder surface that does not sand easily. What I should have done initially was scuff the primer with a Scotch-Brite pad—not 400-grit dry sandpaper—then painted it. However, once the damage from the 400- grit was done, I should have wet-sanded the car (because wet-sanding prevents clogging).