70 Dart vent door fell off ?? Fix?

The door is riveted to a bracket. The rivets act as a hinge. The rivets on my dart were half froze up. When I tried to open it up, the rivets on the bracket pulled out or tried to pull out of the fiberglass. I am restoring my dart, so I fiberglassed up the holes and re drilled them. This may not work for you the way it sounds. Maybe you can use some small machine bolts to hold the bracket to the box. This is assuming that the bracket is what pulled off of the box. Hope this helps.