I have had the same thing happen twice on 2 different machines...both Phantom Vision+. I will be descending SLOWLY (no where near the limit), absolutely no wind, and the machine will start wobbling violently and crash. The first time almost a year ago, it was from about 10 feet and there was no damage. The second time was yesterday from about 20 feet and there appeared to be no damage other than a single broken prop...and the battery was knocked out of its compartment. However, after I fired it up again, the camera now tilts slightly, which is unacceptable. Is there any way to re-calibrate the gimbal? I ordered a new camera/gimbal assembly last night, but would sure like to be able to use the old one as a spare.