Hey Y'all. I was replacing the old crusty foam that seal the duct work for the dash vents, and i was wondering if anyone has found a way to get the center vents from "drifting". The two on the side don't seem to do it, but the two in the middle i will set to a certain direction and then look down later and they have pointed more downward. They also feel a little looser than the other two. Any ideas!