My ones have been ok in my B4's but I do change them out if they get notchy.
You can run B44 rear hubs and bearings, the B44 hub has a larger outer bearing so this should do the trick.
Or if you are feeling flush you could put the Ali B44 rear hubs on it:
http://www.m-k-racing.com/product_in...d=6953&<osCsid>