Without props , just fire up both without props and let me know if yours does what mine is doing and others? This will be profound and helpful to others. 1) Turn on ST16 2) Turn on H -"no props" ! When it states "ready" 3) Accelerate the Left stick to raise it, without mind you props on ! Does the ESC inside the H make a clacetty sound? Let me know, and I will explain, and do but a couple seconds!