I just received my Norton Flattening stone in the mail and plan to use it for the first time this evening. I also received a Natural Chinese finishing stone (12000 grit). Now, from what I read on here I understand it is recommended to lap the Chinese stone before use. What I'm wondering is, will the Norton Flattening Stone do the trick? If sand paper is preferable, what grit? And finally, should all my stones/ sand paper soak in water before lapping?

Thanks for the help