The center vents work after 2 years of being inop. Previous testing of the vent pods with a mightyvac and diagram in hand I assumed that the center vent pod was leaking. I must have been testing one of the push pull pods thinking it was the center vent pod. Is there any control aside from the CCU that I can check. The outside temp was 60 deg. Car has R12, new TXV, dryer, and oil. The AC is very cold even without the center vents working. They were next on the list to fix. Any ideas?