I'm working on the rear axle from a 1928 GB Commander sedan for the Indy car project. While the internals of the axle look very good, the axle taper and the threads are pretty bad. I guess I can run a thread chaser around the threads, but how should I clean up the 1:12 taper? It's pretty badly rusted and pitted. I'm making new hubs for knock-off wire wheels and I want to avoid wobbly wheels. New hubs will probably be made from annealed 4140 steel. I got the drawings for the original hubs, so I know the correct dimensions for the critical areas. Does anyone have a pair of these shafts in bette