when i got my full set of naniwas i also brought the the yellow nagura stone to help scrub them clean. In doing so i found my hones wern't feel smooth in honing omtimes a little rough. so i lapped them with dmt c and in honing they are now very smooth and i have to say feel exallant. I found this with my kitiyama which comes with nagura stone that made my hone feel not as smooth in honing so i never used it again. I will clean with palm of hand and srub them up,with dmt. Any one one else come across this ?

The nagura does clean hones up well just the surface is left not as smooth don't no why.