I finally had time to take a look at the A/C on the car and sure enough the cabin filter was dirty, but the A/C still does not blow from the center vents. I could not find the distribution box on the right side firewall and maybe that is where my problem is coming from? Can you clarify where exactly the dist box is under the hood pass side firewall?
Thanks for all your help.

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94 E500 Sport
SOLD:
2002 BMW M3 Coupe 6 Speed.
SOLD:
92 500E Black Pearl, Black.
18" 2 Piece AMG
ASR Defeat
Performance Chip
Crossed Drilled Rotors.