I've mentioned this to others on the list by p-mail:

If you live in a fairly large population center that has *any* kind of
racing community, there are wheel manufacturers locally.  Just go to the
local race track and ask around in the pits.  Someone will know the
guy's name.  Probably a 'backyard' operation. That's how Jackman and the
like started.  Wheel making is more like blacksmithing than rocket science.

Jim Arnott
WetWesties
Union, OR