When I did mine I just replaced the ball bearings. Races were fine. They held up for 50 years. I donâ€™t think Iâ€™ll be around in another 50.
Exactly how I feel..
Mostly the bearings need to be replaced
As far as installing.. I made a 2 piece drift on my lathe. Top section is threaded, and the bottom piece is the pilot which centers in the frame both with the race installed or not. Then i thread on my nut (on the road) and begin to tighten the nut. The drift will insert the race into the frame. Very clean
If you need photos, i can post.