1996 Jimmy Rear Window Leaking Air

Hey guys, my 96 Jimmy rear window doesn't seem to be closing properly at the top. The top edge of the window is above the roofline about 1/2 inch, and when while driving at speed, I open a crack a window or the sunroof slightly, I get a strong draft from the back of the car.

There seems to be some 'play' where the hinges go under the molded rubber at the top of the glass, but I don't know what to do from there. :banghead:

Has anywhere worked with this? What is the fix?