I hate to say but I have to let my beloved Specialized Sitero Pro saddle go. The carbon rails will not work in my current clamp and the oval one will not do the trick either (unless others have idea about the 3T difflock). I will trade for a Sitero Expert with round rales, Fizik Tritone or will sell for $140. The saddle is black and in very good shape as it was purchased new last July.