Ok I have a 2010 and my wife has a 2019. So I have a real comparison. My issue is that I don't think my Recirculation door on my 2010 is working well. The door does function, i can see it moving when engaged. My real question, Does anyone know how to replace this door? or do i have to replace the entire Blower / Box assembly? To be clear I already know this is NOT the blend door. I'm specifically referring to the recirculation door that is on top of the cabin air filter not the blend door on those with Driver/Passenger zones.