When coming straight down from a high altitude, is it possible to defend TO fast? I'm asking because today when I was coming down for the first time I went high, at around 20' from the ground it started to wobble very bad and crashed. It may be a stupid question since it did happen to me but wanted to ask anyway. Also is it possible to shut the motors off while in flight? If so that may what happened. I wasn't thinking about holding the elevator control all the way down until after the crash.