My PM is two weeks old now. I have the air vents on mine and my side door is still difficult to shut when everything else is closed. The top seems to close properly, but the bottom rear corner doesn't always latch in tight. I also covered the vents with interior plastic paneling, but the side door was difficult before I installed the paneling kit. I've been using the trick mentioned on another thread to push just slightly on the trailing edge of the door as it closes. Just have to be careful not to catch your fingers in there, and don't push anywhere other than that solid trailing edge, or a dent will surely result.