I'm having almost the same problem as a previous poster.. I've taken about 8 flights, so far, since I got my vision 2 new.. The first 3 or 4 flights, I could climb up to about 50', and the copter would hover, almost perfectly still.. Now, with the last few flights, I notice it goes into about a 10 foot circle, which is very visible on the videos... If I climb to 100 feet, it'll go into almost a 25' circle.. At 6 feet, it hovers within about a 1 foot area-- very stable.. I'e recalibrated the compass, even though my specs were well within range.. All my controls are properly adjusted, and my firmware is up to date.. I tried rotating the props -- (they have no damage).. No change.. I have 9 gps satellites, prior to lift off. Also, if I fly a distance away, and turn the copter, so it's facing straight towards me, it'll slide to the right (as viewed from above), as I fly back.. Also, if I fly a distance in a straight line, then let go of the controls, it'll steer left, then go into the circle. Would appreciate any help..