Am wondering on the P3S, just how stable my craft should be when hovering. What I noticed yesterday is that it was staying mostly in a 4'x4' box. Altitude seems to be pretty solid, but it drifts left and right, front and back. I did an IMU calibration on a flat surface, and a compass calibration, but it still looked a little drunk - unable to just "stand" in place. I was in P-GPS mode and had 9-11 satellites IIRC. I also swapped the props out with the unused second set that came with it. There was not any real wind at the time either. This was at about 6-10 feet off the ground. When I took it up to about 40' it did seem to be more stable. So, is this normal? If not, what steps should I take to get to the bottom of it? Not sure what I should be seeing on the sensors screen. The mod value for the compass was around 1500, which I understand is good.