If you hit up the local matco truck, hes got some gell stuff just like James was talking about that i've used before and works very well to help overheating and warping the metal. If ya need a hand, hit me up and i can come by there.
On a side note, whats wrong with the doors that are/were on the truck?
low mazda
+1y
well the pasenger sid edor had a dent the size of my shoe in it when i bought it, and i was playing around and picking at it and it had about 1/8 inch of bondo on it.... the drivers side door is fine with just one small ding the size of a dime or so in it...
tomkat
+1y
Am I the only person who wants to learn to lead it in? I just tacked mine and kept it cool and they still warped pretty bad... don't use flux core, it's hotter than gas wire! I knew but didn't think it would make a difference on tacking... but something caused my panel to warp in and I guess if you use lead you don't have to worry about warpage at all.