same old problem--no heat

[Phillyfanfrombirth]

Do your "flaps" open and close when you pull up or down on the levers? They are connected to the cables and should swing relatively freely with the movement of the controls on the dash, or even manually if you were to take that cable off...

Any chance that the cable isn't tightened enough to the plenum/heater box? And that the wire isn't able to slide inside of the plastic sleeve without moving it?

(BTW, I feel your pain)