Quick and easy.
Imgur album here. Pool ball feels very slick at first but
Clacktalk smacktalk assures me it wears in.
1) Flip over and remove 3 screws. Third screw is under sticker.
2) Remove top and admire the stock ball.
3) Pickup ball. It isn't held in with anything. Admire the mechanical roller mechanisms.
4) Clean pool ball
5) Plop pool ball in between three roller mechanisms
6) Replace cover then turn over and reinstall screws that were removed in step 1
7) Enjoy