I like the idea you had to "blast"...the Rust Bullet...off. I had this happen with...Por 15...body Guy did the floor patch panels and put on...Por 15...2-3 months later it peeled off in sheets...used ...Rust Bullet...not a problem... Frank
I wonder if the body guy did the metal prep as POR instructs. I put it on my entire trunk and a lot of my floor; I have seen no signs of peeling in the year it's been painted.