HI! I was wondering one think about the NSR 4803 bearing. I change my sidewinder clio for inline. I bought inline motormount and 4308 bearing. I thought bearing was 2.37mm but there are 2.38mm, too much base between NSR axel. As there NSR 4308 bearing sice change or fabrication error? Because the NSR axel and the old bearing are 2.37mm.