How much defroster air?

[tucsonjwt]

After working on replacing my defroster actuator today I decided to keep the original actuator because I found a small piece of cracked vacuum hose leading to the actuator which I think caused the defroster door to malfunction (and the replacement "one size fits all" actuator would require significant modification.)

I now have the door functioning properly, but I don't seem to have very much air coming out of the defroster vents. The air blows fine out the floor vent when the control is set to HEAT, and when I set the control to DEF the air to the floor is very much reduced, and the air flows out of the defroster vents - just not very strong.

I seem to recall that my old 73 C20 454 (no A/C) had a lot stronger flow of air out of the defroster. This truck is an 83 C20 454 with A/C. Do you guys have a flow of air out of your defroster vents as strong as the heater vent when the control is set to DEF?