Okay, so My friend and me were riding the other day and he was going extremely hard on my baby. After he was done riding, it seemed like it lost all power in the gears. I can only give it 1/4 throttle, anything more it will just rev like crazy but not transfer any of that power to the wheels. She kicks perfectly, but it just seems like the power is not getting to the wheels. What could this be a issue with? Could the clutch be the problem or the top end?