The 4* won't self correct like the trainer. It does what you tell it to and stays there until you give another input. It flies great. After you get used to it you will like it better than the trainer. The ground handling will be different. Hold up elevator to keep the tail wheel on the ground while taxiing. On take off..ease into the throttle holding some up elev. and use a little rudder to track straight. When you reach take off speed pull a little up elev. and she's airborne. When landing chop the throttle on downwind leg and drop off some altitude. Use a little throttle management on final approach and let it settle in for a 3 point landing. I'm running a Thunder Tiger .91 four stroke on mine and I love it. It flies smooth as silk and it does some pretty maneuvers. It's docile and forgiving and stalls are nice. When it stalls the nose mushes over and it's flying again. No quirks or unexpected snaps. Flies slow real well too. I give it 2 thumbs up. Great plane!