Originally Posted by baddbob
Convertibles flex and that was GM's way of making sure the doors don't hit the quarters when the body twists and flexes. Get the doors aligned well then adjust the wedges with shims untill they just make contact with the door in the closed position. Also make sure your hinges don't have any slop. The wedges often get forgotten when these cars get restored.
+1. Try going across a set of railroad tracks without those wedges. You'll see how much the body flexes, and you'll be lucky if you don't knock some paint off.