If you're happy with it, why mess with things?

If there is rust at the pin you might consider dealing with that in a less intrusive way. A while back someone suggested to me to try polish on dental floss to get in under the scales. Worked beautifully. If that doesn't work then it might be in the interest of the blade's long-term condition to remove that pin and clean it up.

But if it's working for you as well as it sounds it is, I'd be tempted to leave things as they are.

Either way - enjoy it! That's a beautiful hunk of steel.