I kinda had a similar problem when after I replaced my spindle, my Axe wouldn't take off smoothly. It'd jump right off the ground like a rocket. The blades wouldn't pitch for lift until I reached a ridiculous RPM. I'd have to back off the throttle then it'd hit the floor. Kangaroo CP!! I put a dab on machine oil on the seesaw and center hub, made sure the flybar links were loose and my problem was solved. I have noticed though that with my Thunder 1320 LiPo's, sometimes I get a "spike" and the Heli will jump and dip in altitude but not to the point of being an "unrecoverable event." I was thinking I needed a balancer to correct the jumpy current issue so I'm gonna grab one tomorrow. Maybe that's a fix. We shall see.....


Peace,
EM