Also check with local bike shops, as they have access to wholesalers and distributors that might have what you need. It is indeed more difficult now that 27" wheeled bikes are not as common. I often can find unusual things with a well-crafted search, but I zeroed out on this one - the only one I found was "temporarily" out of stock.
Last edited by cny-bikeman; 01-05-14 at 01:37 PM.