I upgraded the phantom 2 vision to the latest version of assistant software and i noticed that when i fly the copter and land it, if i leave the blades running while on the ground they speed up. I can pull down on the stick and slow them back down (some times) but other times it appears to be non-responsive. anyone having similar issues like this. I am not sure the assistant software update had anything to do with this but it is the only thing i have recently changed or modified. The copter is responding as it should in the air but the issue with the motors speeding up while on the ground is concerning to me. any advice is appreciated, as i am a novice.