I have the Madstad in its highest position with the stock windscreen. The screen is raised almost as high as it will go with rearward lean. Its the best so far at eliminating buffeting, but I think I've realized that the remaining buffeting is actually being caused by the mirrors.
At highway speeds I put my hand up between a mirror and my helmet and can't believe how much rough air the mirrors are pushing. There are some good threads recently about this topic and I think I'll try to extend or relocate the mirrors if I keep the bike.
08 DL1000 Black
77 GS750 Black
Pics of both bike and other stuff at [url]http://s222.photobucket.com/albums/dd52/77GS750/[/url]