I think you may have posted in the wrong place, but sounds like you may have some f'd up hubs. If you don't line up the hub body when you tighten those allen head bolts (that always strip or break) you run the risk of cracking the inside of the hub. Clean the grease off and inspect the parts with the spring running around it or the platic bushing inside. If it worked before the brakes, but not after, that's a pretty sure bet. also be sure to set the bearings right on re-assemble, or you'll have a loose front end followed by a scored bearing plate down the road.