Started up my p3s. Said imu error. Calibrate imu. Then said safe to fly gps. So I flew. The bird started to drift all by itself, rocked violently then fell out the sky and smashed the props to bits. Is it my fault for ignoring the imu error? I can send it back but have read horror stories of dji service. It's only 2 months old. I'm now afraid to use it.