We have recently replaced the floor mounted round vent seals, fitted new
overhead ducts and flapper valve.
The door seal will be replaced when the bird is painted in Feb and I know it
does not seal well.
So with the exception of the main door and baggage door the ship is pretty
air tight, that may have made the situation worse.

Ray's theory seems plausible. Just beware that putting on a new door
seal alone might not solve your door-seal problem. It sure didn't
with our old Warrior's door.

The Cherokee door is held on with two light-weight hinges that can (and
often will) be easily bent over time. (In my experience, EVERY
uneducated passenger or maintenance worker leans on that door when they
get in/out of the plane.) All it takes is someone leaning heavily on
the door with it wide open, and your door will NOT seal properly when
you close it, no matter what type of foam seal you may apply.

If your door is cockeyed in the opening, there are half a dozen
possible adjustments, some involving shims, others involving bending.
I spent many hours making my Warrior's door airtight, and can give you
some tips if it should come to that.

Good luck!
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"