Some friends down in Bend started a club called BADGER but I'm not sure it's still a going concern. You can also check with the folks in Eugene, Oregon at Co-Motion.com, Burley.com, and BikeFriday.com...
By the time the bidding gets done on the CK headset it will be more than 10 bucks . . . whether new or slightly used.
Agree: a phenomenal US-made headset!
Have ridden with the bike club in Eugene a few years ago, and yes there were a couple tandems.