Just returned from a servicing. When I bought it from a private seller here on OF he advertised it as "runs perfectly, as expected."
That turned out to be over 3 minutes fast when I got it, with him saying that's good for a watch this age. Lol!
Now I'm no expert but it runs 12 seconds fast, dial up - that's much closer to "runs perfect." In my opinion at least.
Great improvement, also has a heart of a lion with that amplitude. Enjoy it for many years to come.