I've racked up somewhere between 90 and 120 minutes of flight time on the Phantom, and one of the motors now feels a bit wierd. It doesn't rotate as smoothly as the others and feels sort of "notchy" - it almost feels liek it "clicks" into place at about 12 locations around it. One the other ones I can feel a little bit of resistance as they go around, but this one does it to a much greater degree. The linked video shows that as I turn it, it will actually jump to the next position, and it does it so solidly that the whole phantom moves! Video Any ideas?