First off - 1999 Grand Cherokee Laredo. 4.0L, Select-Trac.

Manual A/C and heater controls.

So both my A/c and heater work well..with one small issue - I only get good airflow on the driver's side. Some air is moving on the passenger side, but not nearly as much as it should be.
After looking through the threads here, and other places, all indication pointed to the blend doors. The common thing where one door breaks free, never moves, has to be replaced.....

Today I go out, go through my glove box, carefully cut open the proper area....and the blends doors are in very good condition and working perfectly.

Before I start taking the entire Jeep apart to get behind the dashboard...any one have any other ideas what my problem might be?