I'm pretty sure its 10% as well, measured from the fuselage datum. The control surfaces do not have to be scale, so there is some scope to change their shape.

Personally I really like the way the cap looks, and whilst its low wing and high tail isnt the ideal IMAC layout I can live with it. I really liked its 3d performance too.

Kris1 - with the YS balance shouldnt be too much of an issue. It should make a really good combination. The 68inch airframe is suprisingly rugged apart from the undercart mount, so it will take just about as much abuse in the air as you can dish out.

Chris