Mine was the same thing on the machine. Very touchy, I just put it on the machine to where it will stand still with no tipping and checked and made sure the stab was parellel. just took a bit of patience since you found a spot on the machine where ti worked keep it there and burn some fuel. You want to get the cg as close as possible so you wont have plane that will turn into a pile of toothpicks. Fly it inverted and go from there.