I tried Calling Emerson today, and got a message telling me the number had been disconnected. I gave my little brother my Blackbird and a fine Gerber diamond stone, before he deployed to Afghanistan. My wife decided to suprise me and replace it. To make a long story short, the shop convinced her to get a Raven. The blackbird was a B BTS, the Raven is an A SFS. Not a huge deal, but it was DULL when I got it. No big deal, I touched it up, and it just didn't seem as sharp. I tried all of the tricks, and it just seems like the steel is different. I can't figure it out. I've sharpened several Emersons for myseld and friends, and this one has me baffled. It doesn't seem to take or hold as good of an edge. Interestingly the Raven is a 2001, the Blackbird was a 2002. I've even tried lowering the angle without any change.