So are you saying that fresh air and recirculated air come in through the same door?? I don't get how that would work. When I depress the recirc button, I see the door open correctly, but I feel like when it is closed there is no fresh air coming in, because the air feels musty. It almost feels like I have to be driving over 30mph for fresh air to come into the cabin. Do you know what could be causing this?