I have a mystery I'm trying to solve. I was following the example given for removing the vent window when I came across a screw located just below the window. The screw goes through the door from the inside of the door to the inside of the outer shell of the door. This is on my drivers door. The passenger side door looks normal or at least like what other 72 doors look like. Is this door from a different year? Something a previous owner did? Your help is greatly appreciated as always. There is a bar as well that seems to prevent me from removing the vent window that the screw went through.
