I set the air vent lever on wind screen so that I am able to get rid of the frost on the windscreen. However, when I tried to move the air vent lever and set it on "windscreen and feet'', it was stuck and is not moving. I do not want to exert alot of pressure on it as I am afraid I might damage it. Any clues of what might have gone wrong with the lever. The only thing that comes to my mind is the fact that I got tracker installed recently and the guy installing it might have had done something to it while replacing the console after installing the tracker as I did not change the lever's position for quiet a while, maybe a couple of week. Any do-it-urself remedies for it???