Hello,

I have just received a new Naniwa 12K hone. Upon opening I noticed a small crack. I definitely feel it if I pass my finger on it, and it seems to run all the way down. Is this a minor and common irregularity whose effect would disappear upon lapping, or should I contact the store and arrange for a replacement?

(my camera is broken so I cannot easily send a picture)

Thanks,
--Vincent