Roof patch causing warp / oil canning

[ItWillBeSlow]

Got the "gutter" and perimeter of the roof area 97% clean with my spot blaster. There is a small amount of rust left in some of the larger pits that I will be leaving as-is.

I did discover some more pinholes on the passenger side - my spot blaster created these while cleaning. I've almost got this patched up. A few more hours to go and it will be ready for some primer. This area is hard to patch due to blowing holes in the thinner metal around the patch.

This is about 6-7 hours of spot blasting from the photos above.