Im a girl and 120lbs and idk how to wheelie my CBR 500. The boys can do it fine but I try and I can't even get it off the ground. Do I just need to practice more or should I get a bigger rear sprocket so it will have more power for the wheelie? I will go 15mph, clutch in, rev it to almost redline and clutch out and it still don't go up. Idk if it's because im so light weight or what. Any Tips?