Hi chaps. Noticed on the van when I lifted up the tailgate a bit of water was inside of the rubber seal. When I looked at the tailgate drain holes the 4 of them where blocked with plastic plugs. These fitted the holes perfectly so must have been an item you can buy. I always thought all drain holes in tailgates need to be open. The holes on our VW touran tailgate holes are open. Why would someone have plugged them with these plastic plugs? I thought they might have been having water ingress past the seal and put them in to stem the leakage. Or am I missing something here guys. Your thoughts please. Chris