electric window stuck 412

[Oliver]

On my '87 Beaufighter the driver side electric window has recently stopped working. It's fortunately in the up position. but I do like driving with my arm out the window.
I tested the switch which had live coming to it, but it got quite hot when pressed for the window to operate.
I thought it must be a problem with the motor or just jammed up in runners, so set about trying to take off the door card.
I've loosened the main part. but there's a padded strip along the top next to the window which doesn't want to budge and is joined to main lower part.
I don't want to force anything and was wondering how it is attached to door frame, or do the two parts seperate?

Any help appreciated