if the rivets are loose, that would do it. also if the doors have been tweaked when open, that will move the hinge post a little and mess everything up.

the hinge pockets on the body arent the best in the world, and have been known to just sag if the doors are left open. each set of hinges are differant, but if you just pinned yours it shouldnt matter. did the pins knock out, or did you have to drill them?

if you can find an older bodyman he could adjust them for you. the old guy's realy know how to manhandle the heavy steel in the old cars. almost scary to watch them sometimes!