Why do you say they are junk? What kind of car are they in and what do you do with the car? Is it Drag, Street or a little of both. I have ran those bearings in a short bed truck for years and run at the track at 10:80's and have never had an issue since 1996. I have heard of axle fitting issues that can tear bearings up. I would talk to Dr Diff about it. He could help you with the problem and probably set you up with any parts you need.