When I first got this I was easily able to use it on a medium heavy condition, but now that the ball is "broken in" a bit more, I'm getting too much movement and going through the nose or brooklyn. Should I just polish it up a bit, or do something more drastic to the surface? I've never done anything to the surface of any of may balls other than cleaning, so keep that in mind.
I'm more than willing to learn through experimentation, though!