Got a rear Am Classic hub stock on a Dos Niner. it was one of the recalled hubs. Fortunately, we have a local shop that sells a fair amount of Am Classic stuff, and they had the replacement part that fixes the problem. It is just a little drive plate that the spring engages to drive the pawls into the drive ring. The shop gave it to me, and 15 minutes, some allen wrenches, a cassette removal tool, and some grease fixed it. By the way, the problem is that the drive plate wouldn't reliably engage, so the cranks would rotate forward up to a 1/2 turn before driving the rear wheel. Not deadly, but very annoying.
My 2 cents on the hub so far since fix: works fine now, seems a little cheap, seals look lame. I don't expect it to last long, since we have a lot of wet weather here.