Hi guys, I live in the middle of a large city and am just starting out with my Phantom 2. While I'm learning to control the thing, I want to stay away from people (this stems from my first introduction to DJI, where I subdued a rogue, pilot-less P2 at the cost of one of my fingernails and a very sore thumb). I've managed to sneak away to a very empty park, where controlling the unit was incredibly easy - wind notwithstanding, you could let go of the controller and it would more or less maintain position. My two attempts to fly it indoors - once in my apartment, once deep underground in the parking garage - have been much more problematic; it has a real tendency to strafe or rapidly pitch forward / back at a pretty brisk pace. If you were very skilled you could probably correct for this, but it's orders of magnitude harder than flying in a field. I suspect this is to do with the compass, which I have attempted to re-calibrate many times. I only got results in the park - it won't even enter calibration mode indoors (I think this is because it thinks its current calibration is fine). Is so much of the stability of a hover dependent on being in a large, open space with GPS support? Or is there some setting I can tweak / flight tip to get stable flight indoors? I've had much less sophisticated RC quads that performed okay indoors - I wonder if they were maintaining level flight with a mercury switch or something less prone to outside interference? Appreciate any ideas / suggestions!