[CR]WTB Simplex seat tube mounted front shifter

I need to replace or repair the "blades" (the part that actually moves the chain), on the Simplex front shifter on one of my Chemineaus. It has become so worn that it no longer works well. Any suggestions welcomed. Here is a tiny url linked to a picture of it on Wool Jersey.   http://tinyurl.com /6nkne9  

David Lester

West Hartford, Connecticut, USA

http://www.wooljersey.com/gallery/david+l/

http://community.webshots.com/user/tenordl

http://velo-orange.blogspot.com/2007/04/le-chemineau.html