I have seen a couple pictures floating around of a model 4 with leading edge slats and wingtip stol fences. There are a couple pics of it in the thread titled "The Perfect Kitfox". I am rebuilding a 4 myself and am interested in what these mods did to lower the stall and also did it affect the cruise adversely. I guess I would like to hear the good the bad and the ugly of these mods. Anyone know anything about it or who owns it? Thanks in advanced~Cain Blackbird