the reason I ask is because we are in SW Ia in the bluffs. Our terrace backslopes are steep enough that the upper side of a 15' flex head will have trouble finding the ground if mounted on a level land machine. I have a 9500SH with a 20' which is about all I can use, but most guys with 20' heads and wider here use contour master on a level land machine. You are lucky to live on flat ground. thanks for the re, fun to talk about these things. My buddy with the 850 and I have been kicking around the idea of resurrecting an 860, and repowering it with a 6V92T. I still thinkg that was a great machine that just needed a lot more power to realize it's potential. If I could figure out why the radiator gets chaff in there it would be great. gs