yes CG was correct. I didn't have time to determine what was causing the control difficulty. It took off , got about 6 feet off the ground then went into a long turn trying to roll to the right. I managed to get it back down safely but the second flight it hit the ground hard enough to shear off one side of the landing gear. The second take off also went into a sharp turn to the left i think this time. To the best of my knowledge I just had some up elevator and full power on. No aileron or rudder input. the cub took off very fast and very quickly. Maybe I should try less throttle to begin with so it will be traveling slower when it leaves the ground.