hi can anyone help ,the passenger door window on my e46 touring 2002 makes a horrible crunching sound if openend more than half way since the slammed closed when parked on a hill .window still works but the top back edge of the glass seems loser than the drivers window.i am not keen to take offthe panels due to the airbag etc .i could just leave it as is until it stops working ! any advice to what has gone wronge would be much appreciated thaks chris