So you guys definitely recommend tapping them down? Seriously, I'm really afraid of the oil canning coming back.
What happens if I don't tap them down, and prime as is... Am I going to have a slightly larger roof made of bondo blow off on the highway? because that's one of my main concerns.
So if I were to tap them down, and build up those spots.. Just the sharp end of a picking hammer? Sharpen it you say? What if I puncture the metal? Egads I'm worrying myself.