There are 3 swutches on the panel right of the wheel, 1st to control fan speed, second for the air direction adn 3rd one for the temperature control. And something is jammed. 1st one is working fine but 2nd and 3rd is jammed, I broke those 2 plastic handles in trying to move it. What to do ? How to fix that ? I can easely replace those plastic handles but how to make it move again ?? Thanx