Joe -

I found on my 56 that the two door and openings were very different. The tolerances on these old trucks were pretty wide open. By trying to get even and small gaps, we are making silk purses from sow's ears. A lot of the gapping can be accomplished by door adjustment, but ultimately, you probably will have to do some mods to get to a perfect gap all around.

I found that I needed to add weld bead to both doors (in different areas) and build up the upper corner of the passenger door opening in order to get even gaps.

A pic of adding weld bead to the door edge:


Building up the door corner:


A pic of even gaps: