I'm having a similar problem with full throttle and no lift. When I check my pitch at full throttle it still looks like the blades have a negative pitch. The servos are at 90degrees. I've measured the linkage arm lengths to the manual's prescribed length. All of my trims are centered. Trailing edge is the same side as my ball link on the grips. The leading edge is set to spin onto the clockwise rotation. The tracking adjustments look fine... if I were to unscrew them to increase the pitch it would seem like I'd have to open them up more than they could open. So somehow on this project I've drastically changed the pitch. I added new hitec hs55 servos. Is it possible that the downward throw isn't low enough to generate the necessary lift? The motion looks good and they all move in unison. I read were someone had their stabilizer hub upside down... I'm looking right at it but I'm not really comprehending the malfunction. I'm pretty sure I just have something reversed or upside down but I can't think of anything else to check. The tracking is fine.