Hi all, I've got a new Phantom 2, and one of the motors is much harder to rotate by hand than others. I have noticed this when I was attaching props. All rotors rotate with a jerking motion (because they bond to magnets), but this one requires considerably more force to "jerk" it from one magnet to another. It feels like it bonds to magnets much stronger than other rotors. It doesn't feel that bearings are tight, but it feels like the rotor bonds much stronger to magnets during each "jerk". I have not noticed this motor having different performance than other motors when it is powered. I have not noticed that it heats up or has other abnormality when it is powered (although I have taken very short flights so far). I am afraid that this motor might fail during a flight. Has anyone experienced same symptoms? Thank you.