I'm pretty sure that Peter White was selling CK headsets without any logos. He said that he had a limited number, so when they're gone that's it.

I know that does not solve your problem, but it's an alternative solution with same end (at the cost of a new headset, of course).

See this page:

http://www.peterwhitecycles.com/headsets.asp

and, you can also see Peter's lovely wife, Linda ;-)