I don't know why but on the Venture I just throw the pitch gauge out. With mine showing plus 9 on the bench it will barely climb out of a hover. And it appears to react the same with negative pitch, so, -11 to +11 on the bench. I seriously doubt that the pitch is actually at those degrees but that's where it works best.

Lift

Until you posted it, I thought I just couldn't read my gauga correctly, but on my Ergo it seems to hold pretty true. I don't know maybe it is correct and the heli just likes those extreme pitches.