Welcome to the forums Hoser!
I know where you are coming from and with something like that it would also bug me!
So long as it still works and not much damage but just a misaligned dial.
The thing is, if you open up the camera, then you have a chance of messing it up more and might damage it more, so if you can live with the small irk, then i suggest you leave it as-is.
If you think that you can fix it by opening it up though, and the misalignment bothers you enough, then it is your equipment and you are responsible for it.
Good luck and update us if ever you get to fix it.
Somebody here might know how to open up one.
Looking forward to your future posts.
Welcome again.