I just got my pretty new Brooks Flyer S saddle and successfully installed it. It is my first saddle install, having had all other saddles put on by my LBS. I have had other saddles supposedly "tilted" up since I tend to feel like I'm sliding off the saddle. However, for the life of me I can't figure out how you tilt. There is one screw that puts the saddle on and no way that I can see for the saddle to be tilted. Am I missing something obvious?