Has anyone else seen this problem? When I put the sticks on the controller down to engage the motors sometimes one or two of the motors are rotating at a much higher rpm than the other two. If I have the P2V on the ground this results in it flipping over. This has happened about 4 times now and I have gone though all 8 propellers. Many times if I take the battery out of the P2V and put it back in it is OK the next time, but now always. This happens in GPS or ATTI mode. This has happened with and without the compass calibrated before the flight. I loaded up the Assistant Software and all MOD & GAIN values are normal. So now what I do is startup the motors while holding the landing gear of the P2V so if it happens I can just hold onto it and prevent it from flipping over. I also have all the latest updates. Any ideas?