Quite so, PJ, I was trying to make the point that the idea wasn't Kirklands, or Kazmirski's. The Astro Hog uses it, and Smog Hog, and who knows what before that? I have Matt's 'Superstar 2' and it uses the same section too, so the influence wasn't just American, either. But whoever did invent it must have had those amateur model aerodynamisits well to the fore in mind...
Evan, WB #12.