My Clockwork B5 performed flawlessly today. I over sprung the clutch for the slippery surface today and had my hands full. Even after a spring change the power was crazy. Had to ease into the throttle and it would still spin the tires halfway down the straight. Anytime at speed when running hard if i let off the throttle then pegged it again the front tires came off the ground. And it consistently gets 12+ minutes a tank on our poor mileage high speed track.