http://www.aerodromerc.com/ and look for their 1/6 scale E.III. Much more scale, and has an undercambered airfoil. I can vouch for the airfoil, as I have a 57" Albatros C.III and a 78" Gotha G.IV with the same airfoil and they both fly fantastic, especially at slow speeds. The 1/6 scale Eindecker has scale outlines with full flying control surfaces. I does not have wing warping though, and uses ailerons. Maybe some conversion could be done. The model is designed for electric power, but I'm sure it would not be difficult to put a small 4-stroke up front if you must.