I see you have a Fuzion. I had a problem with my AC ceiling vents not allowing enough air to travel the duct rearward to cool the garage. I switched all my forward vent covers out to another style that allows for better tuning of airflow. You can control flow by adjusting the baffle flaps, and the whole center spins to direct flow where you like. You can also open then straight out which directs full airflow straight downward. The only caveat is the ID of the new vent is slightly smaller than the original whole but the OD is wide enough to fully cover.
Linear Mode
