Left Front A/C vents (LC and Driver Door) do not blow cold air like Right Side

What is your question?

this caravan is loaded with everything inc. the DVD changer/player in the front center. With all of the ATC's set on LO, everything blows cool/cold except the Left front. I believe it to be a stuck mixer door but cant find actuator or door access. Of course you only notice this in the spring/summer on warm days.