Whew! That's a tough one. Seems there should be a logical way to accomplish your goal, but I'm stumped as to how.
Biggest problem is that the factory bend has a 'Pittsburgh' roll on the edge (similar to the hem of a garment) to keep any wave out of the metal edge. Even if you COULD get it bent, the flap would undulate up and down all along its length.
Biggest problem is that the factory bend has a 'Pittsburgh' roll on the edge (similar to the hem of a garment) to keep any wave out of the metal edge. Even if you COULD get it bent, the flap would undulate up and down all along its length.