Vent Window Operation

There is a small wheel through a slot under the lower weatherstrip that adjusts like a star wheel on your brakes. From the 1966 manual: " The lower vent wing pivot is provided with a bracket-type pivot tension adjustment. The star wheel adjusting screw ratchet is used to reduce or increase effort required to close and open the vent wing. Use a narrow-bladed screwdriver to reach through a opening provided in weatherseal, just ahead of the lower pivot, to turn adjusting screws." It is pictured with the vent assembly out of the door. toolmanmike