Originally Posted by halfspeed

The hubs aren't high end and I've had my issues with them, but they aren't bad. The bearings are bog standard industrial cartridge bearings. If your LBS doesn't carry them, they're available at boca bearings on the 'net. You might also have a local industrial bearing supplier who would carry them.

All that said, if you have a good local wheelbuilder, he could replace the hubs (and probably the spokes since new lengths would be needed). It'll cost you though. Figure the price of the new hubs plus $1 per spoke and at least $40 for labor.