The fix is in. For the sake of anyone who may experiance this in the future. 4 bad vacuum actuators for the mode doors 2 dual position acutators adn 2 single way actuators. The worst of them was the defrost actuator. The actuators can be checked at the vacuum distribution block behind the center console. Apply vacuum and see what holds. The tricky one to replace is the defrost since the actuating rod goes through the ducting. The easiest are the recirculation ones right behind the glove box/passenger airbag. Air blows real well from the center vents now and distributes quickly when modes are changed.