A small piece of self adhesive foam stuck about 1cm from the top of the frame sorted mine. I think it was a number plate sticky pad cut up with a bit of silky material stuck to that for the glass to run up. Very cheap effective fix.
Anybody know how to stop the side windows rattling every time you go over a bump?
There is a rubber strip which wedges in the window runner,this eventually gets pushed down in to the bottom of the door ..Think you need to take the door card off to investigate.