Speaking of "raising the bar", check out Herbert Furle's German KR at http://home.hiwaay.net/~langford/hfurle/ . The last few pictures are a ground adjustable prop hub that he's made for his Rotax. Another awesome KR!
Mark Langford, Huntsville, Alabama see KR2S project N56ML at http://home.hiwaay.net/~langford email to N56ML "at" hiwaay.net