Hello all. new spark owner and new pilot. love it so far. getting used to all the modes camera, etc. i was letting the spark sit there powered on so i could go through all the app settings and learn them, as you all know some aren't there when there is no connection to the craft. noticed something today when i picked it up. the fan is running, but i also noticed a second noise that to me sounds like an old servo. first thing i thought of was the gimball motor. the noise goes right a long with the movement of the gimbal. but it isn't that. it is something internally. when i hold the spark in my hand, powered on, and pitch it left/right or forward/backward, you can here a distinct motor whine, secondary to the blowing fan. a few posts i saw about it said it was normal. any thoughts?