I have a question for the experienced modellers, I recently built a spacewalker II arf from seagull models. I equiped it with a magnum xl40 which barely got it off the ground. Wingspan is 60" fly wieght 6lbs ,i recently installed a saito 72 and on maiden flight it came off the runway at about 20 ft and torque rolled to the left. I was amazed at the short distance that it hopped off the ground at 1/3 throtttle. Could it have been that the new saito has too much torque? Or was it that the plane did not have enough forward movement to keep flying? I figure it was pilot error and did check all controlls before takeoff. I think maybe I may have fed in too much up elevator because of the fact of the magnum 40 that was installed prior. A friend of mine suggested that the new saito may have too much power but the airplane does call for a 52 two stroke engine. Thanks