I suppose I should learn how to read.

My thoughts on the panel body and frame, is that they work as a structural unit. The frame of an AD is somewhat flexable, unlike newer trucks. I would think the panel body would be stiffer than the frame. Therefore if all looks straight and is mounted properly there should not be any body flex that would cause cracking. That is if the body does not already have a crack in the area you are having the problem.

I would check all of the mounts again and make sure they are to specs. If they are OK, I would remove any filler at the problem area and make sure that there can be no movement in the sheet metal. If this is a body joint, the welds may have broke, allowing movement. Just to make sure I would weld the seams and if there is a large overlap, I would make some plug welds in the lap area.

There is obviously some movement in this area. Until the movement is controlled you will have a filler cracking problem.


54 Chevy build pics.