1995 Chrysler Le Baron Convertible roof

If I remember correctly, there is a thumb wheel, similar in appearance to the star wheel on a drum brake self-adjuster, between the front and rear sections of the metal frame, right above the top edges of the window glass. I'm picturing it just above the top front corner of the rear window glass. There's one of them on each side. By adjusting those, you move the front of the top forward, backward, and sideways to center it.