2007 Pacifica rear air problem

My 2007 Chrysler Pacifica is having problems getting air to the rear ducts, both the mid and rear sets. Mine has the dual zone option.

The front system seems to be running fine.

I can manually control the rear fan speed and hear the fan speed up and slow down when I change the control. But the amount of air coming out of the mid and rear ducts is minimal. It’s as if something is blocking the ducts up front. Any suggestions?

I’ve pulled the panel under the glove compartment but there does not appear to be any controls in this area. I was hoping to see a vacuum line for the flapper(diverter) around there…