Don't touch the broad sides, just the thin cutting edges, and look really closely at what you are doing. Study a fresh new pair and you should be able to see what needs to be done.
I don't know why anyone bothers to respond to the ranting of this "cowboy". He wants to shill for the other guy and makes up arguments that are pretty absurd. This thread is now in my kill file.
I had a little project from a Buddhist dude once, he wanted the metal work on a little horn that he had replaced with nicer material. The body of the horn was made out of a young woman's femur. It sounded a little weird when you tooted it.