You need to lean back more and not sit upright when the frontend comes up. Let the air out of your back tire to almost flat but not too flat! Practice in first gear on grass and work on rear brake control.
It worked good for me back in the day. If you learn to wheelie in first gear and control your RPM, it makes it easy to wheelie overall. It helps to load the front shocks little bit too. Give the bike a little gas and then let off it doesn't take much but the front shocks will go down just a little bit then commit to your wheelie as the shocks make that small rebound back up. Doing this will help the front end come up smoother and then lean back and relax. Popping the culch in second gear helps but get to know the balancing point better first before doing so.@@XrCustomCycles
