Hi not had the problem myself no sunroofpeterbury said:hi
You are spot on. The original rubber bungs with the so-called hinged
centres were removed and replaced with blanking plates. The drain was then taken down from the end of the drain channel, thro a bigger diameter pipe and out in the rear wheel arches. This arrangement
seems to be as near to the latest design as they can get. So far so good. It sounds like you may have some experience of this problem.