I did one, and I did have it balanced but that was because I didn't mark it ahead of time (amongst other issues). I actually took the one I had to a shop to assess whether it needed a rebuild and then did the rebuild myself (after they took it apart).I have not done one
But if I did I would not have it balanced. As long as you mark it and put it back the same way it should not be an issue. The nut is at the center so even if that changes it's not going to have an impact.