A couple I know was riding 'round the USA (down the west coast, across, up the east coast, and back) and had a flange break on their tandem hub a little more than 1/2 way while in Georgia. They called White and got an entire built wheel shipped to them via Next Day Air. I don't know what they paid for this service (if, indeed, they paid anything), but they didn't even lose a day on schedule.
Pretty decent service, if you ask me.
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Jeff Wills
Comcast nuked my web page. It will return soon..