Just to clarify...there is no room to have a thread put on the inside as the bearing is there, the bearing cant be moved else there will be too much stress on the freehub body and nothing to stop it pulling when putting pressure on it...faceplant jobby! It has to be cut onto the outside. Looks like im gonna have to get a lockring made with some threads in. Will the fact that king is american? affect the thread size? that may be a stupid question lol.