Earle,
I PM'd Kevin Kimball about the ailerons because I had always understood it that the SS ailerons only made it to the S1-11B and Model 12 (and, unofficially as they were copied by Hale Wallace at Steen Aero Lab, the S1-SS), here's what he wrote back;
[SIZE= 13px][COLOR= #3E454C]the S1T did not have SS ailerons. It had Symmetrical ailerons AKA round ailerons. These were thicker than the wing and were shaped like a snow cone, round nose to the point at trailing edge. The idea was to be easer to seal but the stick loads were really high. So, my buddy Ben Morphew suggested they copy the spades that were on zlin 526 ailerons and that lowered the forces enough to fly. curtis' aerodynamically boosted ailerons, the actual name, were developed for the super stinker and model 12 designs.[/COLOR][/SIZE]