Can I reshape an out of shape flare with a heat gun or hair dryer or will I be wasting my time?

Will it stay in shape after that, do you have to clamp it for awhile?

I trimmed the fronts of mine and rolled the edges to make it look clean. I heated them with a torch and bent them around. As they cooled they stayed in the shape I wanted. A heat gun would be a better, more easily controled method.

Ha, I'm surprised they didn't catch fire, but thanks, I'll try the heat gun.