Flywilly,

I believe you are correct. I also remember an article a few years ago in one of the magazines about the EU1A and its different variations. The author discussed the horizontal stab and why some people left it flat while others built it with an anhedral stab. A good friend of mine flew an EU1A for years here on the east coast when he was flying pattern competitions. He said the plane was slightly on the heavy side, but flew the plane with the anhedral stab and a YS140 and it was his favorite pattern plane of all time.