There's a very strong couple on Tandem@Hobbes who have one that they campaign in NorCal. This was a recent post by Craig:
http://search.bikelist.org/getmsg.as...10610.0089.eml. You might want to float him a note.
To the best of my knowledge, the frame is the same ones (edit: or very similar to the ones) offered by Spicer and AeroLite and produced by Xi'an Chanda (XCD) of Xi'an Shaanxi.
http://www.xacd.com.cn/product.asp?r...rootcl=1&cls=1 (link may or may not be working)