door glass adjustment frustration!! 69 dart convertible!! any experts!

Lawrence, there is a phillips head screw between the side rails on the folding top, between the front piece & the center piece. Turning this screw will allow the side rails to close in a lower, or more flat, position. Partially open the top, and look up between those 2 rails and you'll see the screw head.
Could try that, maybe.

George