And if you can't score some bronze round stock, try for some Delrin rod big enough to turn down a bushing. I bought some from a local plastic fabricator who fabricates rudder post bushings for local yachts and fishing vessels. I turned and milled some stuff from it and it is great to work with and for bushing use hard enough and somewhat self lubricating.
Merritt Island, FL
When a person asks you for advice, they don't want advice. They want corroboration.