So I just received my Phantom 3 Professional and I have right away noticed that the front right black motor is fairly tight to screw on, and is clearly unlike all the others. With the other three motors, you can easily just spin the propellers on. With this one black one it needs to be manually screwed on and off. It like I have to hold the motor in place in order to fully secure the propeller onto the motor, otherwise it doesn't go on all the way down. I have included a video of the problem below. Btw I've had an Inspire 1 in the past and Phantom 2's and I can this thread is not like the rest. I just want to know if this is bad or not before I fly it. Any help is appreciated and thanks in advance.