I have my top frame off to repair a broken part and noticed that one side looked different than the other. From the "L" piece that attaches to the side swivel points on the car, the bottom arm of the "L" is a solid piece of metal stock. From that first weld point attaching the swivel arm to the rest of the "L", it is more like a channel piece of metal. Just above that first weld attaching these two pieces, the channel has blossomed outward as if heavily compressed from the top at some point in the past. It appears to only be on one side with the other side (now broken at this same point) but showing only mild bulging, if any at all. That bulging out isn't supposed to be there, right? If the answer is that it isn't, I'm afraid it will throw off reinstalling the frame after heating and hammering the bulge out. Signed - Arizona Alka-Seltzer Man!