So I'm working on my 3rd knife this is actually my first knife that I've made on a belt grinder. My first was made with a file and the second one I cheated and used a surface grinder at work. Overall I'm happy with it however I had to spend a good bit of time hand sanding to get the grind line nice and straight. But anyway I noticed these two songs on the flat right at the ricasso. The blade hasn't been heat treated yet so I'm not sure if I should grind the whole thickness of the knife down?