You are just a little too far forward on your main gear placement, and I believe you have it turned around backwards. The straight edge should be to the front, with the swept edge to the rear, at least that's the way mine mount up. On my LT40, the front edge of the main gear is right up against the BACK of the fuselage former that is at the leading edge of the wing. This way, when the aircraft rotates up onto the mains on takeoff roll, the mains are directly under the leading edge of the wing, and when the aircraft is sitting at three point stance, the wheels are slightly in front of the leading edge. I've been flying mine like this from day one, and have had no problems with it. The ground handling is perfect, takeoff roll is well behaved, and the landing rollout is fine. No controllability problems at all.