I dropped my car off at the dealer today. I just can't take the whine anymore. We are taking a vacation for a week so I figured it was a good time to drop it off. I told the tech to drive it home so he can experience the whine. My ears ring after an hour in the car. I really hope Ford replaces the gears under warranty. If they don't I'm going to buy new gears and pay to have them installed. I even suggested they install 3:90's just in case the 3:73's have an inherent problem. I'm sure that the UCA location helps resonate sound as well.