I kinda figured that's how it works. I need to wet sand and wheel my car again, (it shrunk up in some spots) but I'd like to know what I'm working with. I had to hang aftermarket 1/4's on the car, and do a lot of bodywork. So basically, I had to mud the car front to rear, and then primed a few times. Most of it wound up on the floor, but I know there's some spots with a fair amount of filler.