I've been flying my Avistar and it is now getting boring. Santa brought me a GP SuperSportster MKII 40. I got it together and put a OS .52 FS with a 12 X 6 prop on it. On take off (which was within 10 ft of roll out) it got about 15 ft high and then just decided to snap roll back down to mother earth. It is easily fixable and before I try it again, I would like some direction as to how to get it to behave. I'm thinking that the four stroke torque kicked in and snapped it. Maybe I shouldn't slam the throttle to full with a 4 stroke? Should I leave her on the ground longer before letting it lift? What is the proper way to run a 4 stroke?

Thanks!!