I have a shapton pro 12k ceramic stone and I was wondering if lapping it with a norton lapping stone would ruin the finish on it/ make the surface too rough? I've looked through a lot of threads and there was only one with a vague reference to somebody's friend saying it roughed up his stone. If it does rough up the surface, could a finer grit stone be used to smooth it out? Or should it be lapped with a finer stone to begin with?