I have an OS46fx on the fazer, running a 12x4 APC prop. The CofG is at 7 inches from the trailing edge at the wing root. The only 3d manuovers I can do so far is an inverted spin and normal harriers. Although I've also been working on harrier landings! I just chicken out at about 10 feet and advance the throttle briefly and gain some speed, then cut it and land normally. The main problem with the hover is that once i hit the sweet spot, the aircraft begins to torque roll. Then once the belly is facing me I seem to give the wrong rudder input and it falls out!!! I have tried putting in right aileron to stop the torque roll but then i forget to watch the other axis of flight. (i.e. Rudder, elevator) I think I just need more pratice. Now I'm looking forward to the weekend. The fazer recovers very quickly If you get in trouble, just ad full trottle an fly away. I only seem to lose about 10-15 feet if i fall out sideways. So I can practice at around 150 feet and close to myself. I think it will come with time and pratice.