Why are my AC vents blowing so weak?

2001 Ford Explorer Sport.
I just changed the AC actuator. Not as bad a job as i thought. Anyway my AC vents blow so weak I can barely feel it with my hands against them, no matter the fan setting. Floor and defrost blow great. Any ideas?

It sounds like your heater blend door is broken. It is a common problem on these vehicles. The plastic on the door hinge is weak and prone to breakage. The Dorman replacement part is reinforced to prevent breakage. You can find several videos on youtube on how to replace the broken door.