Hi, My DJI Phantom 2 Vision Plus does something strange. Whenever i'm ready for take off or when i've just landed and the motors are spinning on low speed, it seems one (or more) of the rotors start taking off. Automatically, without me touching the remote controll. It causes the DJI to partly take off and land on 2 props. It probably has something to do with a couple of crashes I had, but i'm wondering if there's a solution to this problem. Thanks in advance!