Please help removing discovery 2 door top

I have an issue with the window channel on the drivers side, it would be an easy fix however someone has bonded the runner to the glass from a previous repair! Believe it has had a new side window at some point. I need to remove the glass, so far I have removed the 2 x T40 torx at the top of the door and the 2 x 8mm bolts at the bass inside the door however the front of the door top (nearest the engine) doesn't want to budge :-( am I missing anything? Any help would be greatly appreciated!

There are bolts down the side of the door nearest the front wing