Have you had similar - or different - experiences with these products?
In using POR as a stand-alone product, painted over slight surface rust as you described, it was on there as if it had been powdercoated. Smacked it with a screwdriver a couple times, didn't even leave a mark.
On another occasion, we had some bare metal with some factory finish paint (from mid 50's) next to it, and the POR was used to cover both surfaces (for consistency). After curing, the POR peeled off in sheets from the painted surface.
This result told me it doesn't play nice with others, but as a stand-alone product was a good protectant for metal with slight surface rust. I'd be curious how the other products you tested adhere to other paint products. Got any leftover painted parts from the 56?
