So I don’t know what I am doing wrong here....I finish my grinds, a surface grind, sand, put my mark on it....looks great. I tape it up with blue painters tape. Put the handle on, hand sand, blah blah blah. When I take that tape off, it’s like my blade is all ugly, there’s discoloration, marks from the tape, it just doesn’t look the same. I clean it off with everything I have, but it still doesn’t look clean anymore. Best practices please?