Haven't had the KO very long. I'm finding that I like it for some heavy lifting but still much prefer my KME for everything else. That being said the KO does some things really well. My question to you guys is how do you keep the metal dust that collects on the guides from marring the blade. I clean it often but I'm still seeing marks on the blades. Haven't damaged any that I really care about yet and happily none that other people have brought me to sharpen but I'm hoping there is a way to resolve this.