I have a 2008 Cervelo P2C Dura-Ace (specs here: http://www.bikepedia.com/QuickBike/B...-Ace&Type=bike) and hate the stock Selle Italia saddle, so I just bought a Fizik Arione Tri off of eBay. While replacing the seat, I ran into trouble when I realized that the clamps for the stock seat are designed for rounded rails, while my Arione has squared ones. Any replacement clamp options or advice anyone can offer?