Where exactly is the leak... is this anything to do with the similar topic as...???
as described in the above thread...?
left/right side also near the slam panel. the rubber seal looks ok until you put it at the side of the new one the new one is roughly 5mm higher the old one had lost its shape on the curves of the boot lip and check the white clips in the boot that hold the rear lights mine was leaking there too. you will have to take the boot lining out to check them