Does anyone in the US - Chicago area perhaps know of a custom parts company called Farley and Ace. They used to make a friction steering damper for the New Bonnies but the web address I have for them doesn't seem to be active anymore.
A very short and shallow google search gave me this link: http://www.bonnefication.com/farley-ace-inc-bluebird/ (http://www.bonnefication.com/farley-ace-inc-bluebird/)
Yes I found that and other references but the website www.farleyandace.com is a dud.