oh , traveler, I just thought that the blades might be a bit too large (long) for your motor. That WOULD make the motor strain and cause problems, so, making it lift off at 3/4 throttle would help, OR you could clip the wings a few millimeters. (please don't ask me how, I really don't know []) if you have some shorter blades you could put those on and test that theory in any case I'd like to know the results of that