Rodney, I'd have to disagree with you. I've built all three of the large Lazy Aces (which excludes the smaller 62" version). The original Lazy Ace, published in RCM, was 76" and has a flat bottom airfoil. The Super Lazy Ace, which has a span of 96", is an exact copy of the original. Chuck Cunningham added a Big Lazy Ace, with an 84" span, which does have a semi semetrical airfoil. It also has a much different shaped stab, elevators, fin and rudder. There is a vague similiarity between it and a Stearman, mainly in the tail group. I believe the plans are still available for all three from Sky Master Industries in Fort Worth, Texas