Maillard hub parts are sporadically available on eBay. A rear axle assembly, complete with cones, was recently for sale for $22. A new hub (made in China) can be bought for just a few more dollars. If you are a stalwart devotee of vintage parts, keep the Maillard hub and buy replacement parts as they become available. Otherwise, go to a China-made wheelset for daily use. Chinese wheels are good quality, very affordable, and are easily replaceable. I am satisfied with my Wheelmaster wheels purchased from Niagara Cycling.