As the title suggests, the two center vents in my 03 have ceased blowing air out. The far left and far right ones work fine. I'm assuming either some duct work has come loose, or maybe the selector that opens and closes those two has either gotten stuck or is broken. I have never taken anything apart on the interior of a car before, so I have no idea where to start if I need to get to the inner workings of the vents. Can anyone confirm or assist in the diagnosis of the problem and, if need be, tell me how to get to the innards of the dash? Any help would be greatly appreciated. Thank you.