So i realized i messed up my zt0620 (tanto version in case you didn't want to google it) and i realized i concaved the blade. Im not sure how i did but its noticeable and bothers me a lot. Any way to fix it? I seem to only sharpen the middle of the edge and barely the beginning and where it meets the secondary point. Same with the second edge, not as bad but still have the same issue. I have no problem with other tantos, just this one