The Astral Vx had badly deformed window rubber when we got it.
Took a paint stir stick , slotted in the channel (it bends to fit)...
...and wedged it with two cut off bits from same stick.
Rubber was then gently heated with Heat Gun and allowed to cool.
Seems to work quite well...the rubber has returned to almost perfect....
...and I think will get even better now it seats correctly against the glass.
Thought I'd share as I've seen a few peeople talk about screwed up window rubber.
jo