I was just gifted an Aritsugu Kyoto Gyuto knife from a friend. It was just collecting dust at his house and I ended up inheriting it. Yes I know lucky me, good friend. Here's my dilemma and the help I need. My friend has been sharpening this gyuto as a single bevel as that's what he (thinks) it came set as. I'm under the impression that Gyuto, as a western style knife should have a double bevel. If i'm right, and it's been wrongly sharpened as a single bevel, should i take it into a knife professional to get the edge re-set? I'm comfortable sharpening my own set of single bevels, but if this knife hasn't been treated well, i'm thinking starting fresh with a professional is probably a good idea. My friend purchased it personally from the Aritsugu store at the Nishiki Market in Kyoto. (Not Aritusugu Tokyo / Tsukiji market). Here are some photos of the knife in case this helps with identification.