Thanks for the timely response CW. Much can be gleaned from the pictures included with your explanation. An AUW weight of 4430 grams ready to fly is nothing short of amazing. I too am a firm believer in one's ability to pay attention to detail and keeping the plane's weight as light as possible. It does not take much talent to crush the 5050 gram limit but it takes skill and attention to detail to reduce the AUW of the Scorpio by approx 600 grams! Are you planning on making a basic kit available for purchase? I am sure there are other flyers interested in the Scorpio. BTW, I am familiar with the legendary designer and builder David McFarlane. Again, thank you.