seat collar in 35 mm for carbon frame

[rickstyle]

i have a ridley supercross with wishbon carbon and i have a problem
i don' t find a good seat collar

i don't like this :

[img]http://www.store.yahoo.com/cyclocrossworld/diacomalrear.html[/img]

i want this seat collar in 35 mm !!!

[img]http://www.store.yahoo.com/cyclocrossworld/coseco.html[/img]


have you got a solution ?
thanks
can i built it ?[/url]