I have a new Phantom 1. Have just about over an hour of quad flight time. Used to fly RC planes. I have done multiple Basic and Advanced GPS calibration. Done the compass dance a million times, the the drone just loves to drift. Its unfortunate, since I am looking for something that is a stable platform to take videos and stills with. Calibrated the transmitter too. Everything is right on the money, except the drone drift. Please can someone give some suggestions???