Also from Hot Rod:

Carburetor throttle shaft rebushing kits.  They list for Quadra-Jet 
and Holley for about $35 and then a 100 piece kit that has 10 sizes 
for $100.  If you knew exactly what size you needed you might be 
able to rebuild that unidling Solex for $35.

Carbs R Us
PO Box 2797
Mesa, AZ  85214
(602) 461-1690

Usual disclaimers apply.
-- 
James A. Brill Jr.         \\  //
jbrill@unlinfo.unl.edu   \\ \\// //      If you're not outraged
University of Nebraska    \\//\\//     you're not paying attention.
free-lance homo sapien     \/  \/