I recently tried to close one of the vents on the center dash, but it seemed stuck. I forced it a bit, and it clicked off track. now the vent is out of whack. Does anyone know how to remove the vent covers so I can try to fix this thing. Also, it seems that since this happened, hot air comes out the floor vents when I turn them on. This happens even with the temp set at 60 deg, and the center temp knob turned to the cold setting.