ORIGINAL: K94max
Could be the blades. I put mine back together last night after a mishap and i tracked my blades but it was taking a lot more throttle to lift it than my usual. I lengthed each blade arm 1/2 turn and it was back to lifting off at the "normal" stick position for me.
Forgive my newbieness, but I don't follow you...by blade arm are you talking about the linkage that attaches the blade grip to the seesaw?? If so, a half turn would mean pulling it off the ball and spinning it 180 degrees?