Ok, so I was in the garage for a bit today. It seems the only airflow is through the center vents. Regardless which way I put the levers. As stated before, all the cables work and the valves turn. The blower works at all speeds. When I stuck my head up under the passenger side dash, I can see the mode doors move with the cables. I can actually touch and see the core with a mirror. There’s just no air flow from there. It looks like the duct work comes right from the blower motor to the center vents. I’m guessing there has to be something that stuck on the vents to be open all the time. I’m not sure. I was trying to find an exploded diagram of the system. Still looking though.