[sb400]

The body tub is fairly flexible, especially if there is rust damage in the floors and rocker boxes. Shimming the mounts essentially bends the body. In gereral, shimming the mount at the front of the tub will have the most influence. To open the gap between the door and windshield post, add shims between the rubber mount and the body.

It is also possible to adjust the position of the door in relation to the body tub. Unfortunately you have to remove the fender to get to the bolts. Adjusting the door hinges has the most effect on the overall distance between the door and the rear 1/4 panel, and between the door and the rocker panel.

To really get it lined up well you need to shim the body and adjust the door at the same time.

Good luck, look forward to the photos.