Hi all I have a 2015 d40 navara and am having trouble with moisture in the cab. I seem to have narrowed it down to the vent behind the back seat. I initially thought maybe the back window was leaking but after squirting water on it and looking inside the vent had a fair amount of water sitting in the bits behind the rubber flaps. I have taken the vent out and inspected it, seems to look ok so not sure why it leaks. Just wondering if anybody else has had this issue or if anyone knows what can be done to fix it. I am considering gluing a rubber flap to the vent. Thanks.