air door actuator not working properly

My heater and A/C work but blow only through defrost or floor vents.Temperature and fan speed change correctly. I can hear a change in airflow when I switch between vents but still doesn't come out of front vents. There is no clicking sound. Both passenger side and back seat vents blow hot when A/C is turned on. Driver side blows nice and cold out of the wrong vents though. I can hear a major change in airflow strength when switched to recirculate but no difference in strength of airflow coming out of vents. Like the air is stuck inside the dash or something.