I have been sending the occasional bent Ducati wheel to this place:
MC Wheel
165 Martel Court
Keene, NH 03431
toll free, 1-888-MC-WHEEL or local, 1-(603)-355-3901
mcwheel.com
I am sure they could repair your racing wheels too.
[This message has been edited by sandman (edited September 15, 2003).]