leaking rear door

When ever I wash my D1 there seems to be a little water in the cargo area. As best as I can tell it is coming from the top mout of the roof ladder. The weather stripping looks to be in good shape so I don't know if the bolts are pushing it back just enough to let some water by or what. Any ideas?

Water likes to follow a trail before it comes in sometimes. I usually puff some talcum powder in the suspect area and start out light with the water. As soon as it's coming inside, stop and look as good as you can without opening anything. Dry off any excess as good as you can, then carefully open the door. Look for the clean spot, that's where the leak is.

Thanks for the tip. I will give that a try.