Duster front window trim - gasket flap

A pic of what you have would help. When Speedy Auto Glass did our 72 duster they put the windshield into the gasket and layed it into the frame. The bottom flap intact. They used butyl inside the gasket as well as all around the frame. The locking strip does not go into the bottom portion of the gasket. Sides and across the top only. You should see 2 lips on the lower frame (cowl) where the flap sits behind. The clips to hold the trim is out further and clears the gasket. Hope this helps.