speedsport- if you've been flying the pico you shouldn't have any trouble with the blade. You need to get it in the air to gain control. Since it's not fixed pitch it reacts a little differently in the ground wash. I had trouble with mine expecting it to be the same as the pico until I accidently got it about two feet up, then it flew like a dream. As far as the head speed at full throttle, it sounds like your blades have too much positive pitch. If you exceed 10 degrees pitch the blades kind of turn into paddles and just beat the air. Have you checked the tracking? This also will cause the same reaction. The blades basicly slice the air to relieve the pressure for the oncoming blade (or something like that). Anyway, if they're not tracking properly they create individual air flow and just conflict with each other.