How tough or fragile is the P2V+ gimbal? I worry sometimes about it getting knocked as it lands, or leaving the plastic bracket on for too long after switching it on. Even fitting or removing that bracket, I worry I'm going to damage the gimbal. I also noticed that filming is steady when it's facing forwards, but tilting it down makes it jerky, even if tilted only say 20 degrees. But that makes sense because the further downwards it is tilted, the less compensation there is for any lateral (or banking) movement.