Double / triple check you’re setting the valves in the right order
How / what method are you using to set the valves ?
Are you sure the leads are on correct ?
The screens pretty easy to get in and out , the headliner wraps around the seal edge so it can be tensioned properly, can’t see it would work properly without pulling the screen
There’s pictures a couple of posts up, they bolt into the original seatbelt mount under the window into the frame and another mounting 6 inches lower with an m8 bolt, if the 2nd point is missing it will need adding