Anyone know what's happened to shapton glass stones? Most of the USA sources are out of stock in the common grits and the remaining grits are slowing vanishing. The Shapton USA site has been cleared of content except for a message indicating they are no longer selling on that site and a link to HMS Enterprises - which offers no more information on the Shapton line. Toolsfromjapan has a message indicating the glass stones have been discontinued in Japan, however the Pro line is still listed on their site. This doesn't seem like the typical intermittent supply issue.