I have a 57 Cadillac hood that has been through the ringer. It appears to have been buckled from either the hinges being frozen or possibly flying open. It was "repaired" with a pointed hammer and lots of filler. I have gotten the hood fairly straight, but can't seem to get that last bit of stiffness needed to keep it from oil canning. If I heat the area gently with a torch it stiffens temporarily, but when it cools, loses the stiffness. This hood scares me because of the almost flat crown in the rear. My question is do you think it needs to be stretched where i applied the heat with on dolly hammering, or shrunk where the "repairs" were done? I just don"t want a swimming pool!