My touring bb is starting to give a click every revolution, its an old version of the Axix line. The sealed bearings are locked in with screwed insets behind the bearings and the side has a double row of bearings. Old one and newer version, wonder if it's a tandem version, been in different bikes with triple chainsets over many years. Can't undo the inner locknuts to replace the bearings. No problem removing from bike, going out to Wheelcraft for some more tools.