'11 MCS passenger window isn't sealing as intended low at the B pillar. I can slide a dollar bill pretty freely. Believe this is the source for the wind noise on the passenger side of the vehicle.

One observation is the door could be moved toward the centerline of the car at the latch area by maybe a couple millimeters. The door edge isn't quite flush with the rear quarter panel. Can the latching mechanism in the door be adjusted outward so the door and window close tighter on the window seal?

Is there any possibly of adjusting the window regulator inward toward the centerline to make the window seal tighter.

 

Hi, I ran across your thread while searching for the same issue. Were you able to correct the gap?

 

you need a re-calibration/adaptation to your windows with a tester.