My rear window came lose from the canvas (as they all do.).

Since I have the extended Chrysler warranty, I though, "no problem." Wrong! NOT COVERED as this is considered trim. Called a trim shop and they said "I had to replace the entire convertable top," since this is a head strip afixed item.
Well, after some internet research, I decided to try the black
3M™ Super Weatherstrip Adhesive. I applied it to the rubber on the window (the entire window is framed with a rubber ring) and the flap that runs on the inside of the canvas opening for the window. I did this with a 1/2 inch flat artist brush. After a few minutes of setup time, I lined up the window with the opening. (
Since this is a contact cement you only get one shot at this.) This is a two person job. (The wife helped.) I pushed the window against the frame and held it in place with a heavy weigted bag from the inside. On the outside, I used some 2" Aluminum A/C duct tape with half on the glass an half on the canvas to hold the canvas to the glass. (Not that it needed much holding.)
After a few hours of drying time, I removed the tape and the bag.
The results is a fixed window for about $10.00. I has only been a week, but the fix is "solid". I drive I-95 every day at about 70 MPH, which puts a load on the rear window, and it is a good as new.

Good for now, I guess only time will tell.