The GPS lock is better than it was after a crash, but still not good. I wouldn't want to try return to home. First I power the Phantom, flashing yellow, turn on the controller, slower flashing yellow. I do not calibrate for GPS. The Phantom is inside away from speakers and TV, by that I mean 6'. Here's what the software assistant says: http://screencast.com/t/HwjT7KeJF Right out of the box the GPS lock and hovering was very good. It was horrible three flights ago for some reason, and now it is what it is. Ideas?