I have had the superskids for 6 months on my HBFP. I run 2cell 900mah Lipo with no problems at all. Flies for a good 10+ minutes before battery voltage sags and has trouble accending. Flies all over the place. I'd suspect your battery first. How's your blade tracking? Besides vibrating, out of track blades affects lift more than you would think. Are your flybar paddles level? Just trying to come up with something here.... Throttle trim all the way down? Don't know if that would affect the throttle range, but .... worth mentioning? Motor/gear mesh too tight? Weak motor? ... I have over 90 flights on my motors and still going strong, but maybe I'm due for a replacement....