Butt update: (P.S. I loved typing that.) My B-17 sits happily on my LHT. After a year and a half I'm finally wearing indentions in the leather that tell me I do "fit". I finally got that the B-17 likes to be tilted upwards slightly and not level at all for me. If you look at it on my Surly you might think I get gouged, but I can't even feel it. Sometimes when I ride I check to see if the nose is still there. LOL.