I just got my car back from the dealership. There was a noise behind the pasenger dash... a clunking every time I turn the AC off or when I turn the recirc on/off. The invoice says they replaced the Housing air inlet and actuator. They told me it was some kind of flap making the noise when it was opening and closing. Does this sound right?

They took my dash apart and some of the paint on the interior needs to be touched up. I hate it when I bring my car to a dealership!