"Alright thanks, I'll do some testing regarding minimum pwm's. "

"This can be testing by putting the drone in stabilize and see how much you can move the throttle before the motors spool up?   "

"Yeah, I ruled out ESC calibration, as that's what I thought the problem was at the start, but one the second crash "which was the quad" It was a freshy, just built and calibrated correctly. On that point using arducopter and mission planner for…"

"That would make sense, The controller asking for "some" thrust" out of a motor but instead it gets nothing, inducing an over-correct regardless of PID's. Thanks I'll look into it."

"Can you give me an answer for the effects of high frequency vibrations getting to this controller? I have 5 drones operational with the x2 using arducopter v3.3 and they work great. But I have had two crashes during testing, one being a quad and the…"