

Remove existing seal by gripping the seal and pulling this off the canopy. This isn't glued on.
Starting from the join, press the replacement seal onto the canopy ensuring this is pressed tightly into the corners to prevent leaks.
Apply black silicone sealer around the join, using a small amount of super glue, glue the hinge joiner over the join.
How to extend the windlace close to the end of the face plate.
Pull the seal away from the canopy, stretch to the desired length, press the seal back onto the canopy.
How to shorten the windlace further from the end of the face plate.
Pull the seal away from the canopy, press the end of the seal onto the canopy into the correct location, press the rest of the seal back onto the canopy.

This is how it looks if it is stretched, windlace end close to the faceplate.

This is how it looks when compressed, windlace end far from faceplate leaving a gap.

Extending rear door windlace
How to extend the windlace closer to the edge of the door.

To compress and add gap to the widlace.
How to shorten the windlace further from the edge of the door.