OK so I had a Q500 but it was Hijacked one night ... No kidding.... Thought maybe the local PD snatched it or maybe it's my Issis neighbors who's home has all kinds of "Interferance" coming from it.... Any way So I got me an H and already having trouble... The GPS locks but starts on deck at about 6 feet and climbs to 60 feet... Local Hobby place did a re-calibration and says they think it's becouse the heat on the top is affecting the barometer... There's a barometer on this thing??? Isent that above sea level ?? Does it then calculate altitude from the GPS... I'm lost.... Well they flew it a few times and it RTH no troubles.... That's the part I was worried about.... Any ideas??