Water Ingress--not drain holes.

[Stan the Bat]

A lot of water appearing behind passenger seat---any helpful clues ?

Drain holes are clear.

[Stan the Bat]

The drains I checked were the long ones from the rain rail.
Where are the other ones ?

The rain rail itself seems ok.

[Stan the Bat]

The water is coming in through the back window, there doesn't seem to be a seal between the plastic and the glass, the plastic can be pulled away from the glass easily.

Anyone had this problem before ?