Boy, some of you pro-body guys will get a big laugh out of this one. I brazed on a lower-outer door skin today and it oilcanned on me and stayed that way. I did keep the heat low and switched back and forth, left side-right side to keep the heat from building up in one section but it warped like alfalfa's cowlic on a overslept humid day! What would be best, 1. heat the whole section slowly and clamp corners before cool 2. heat & hammer 3. dynamite? ( its a Fard ) ha 4. put a Shevy door on? Seriously though, I don't know, its awlful. And please, oxy-acetelene is all I have, can't afford MIG right now, we have 5 granddaughters and grandma insists on paying their way through..........' TOYS-R-US '. Seriously, I think heating the whole panel and hammer forming if I have to hammer, but I hope one of you experienced guys have some suggestions, help,help,help.