Okay here's my take on the #80.
I find the most important step is to get it sharp and get the hook perfect. Seems there is a fine line between making it "sing" and working fine. I used to file, burnish and reload. Now I file with a fixture to hold the angle then sharpen/hone and burnish.
I don't see much merit in using the thumb screw to set or change the depth of cut. This is one of the problems I had with the FWW article. I set the blade in place on top of a very flat board, tighten the screws a little then with the lightest tap on the top of the blade, set the finest fraction of depth. Then tighten down the screws. Then with the thumb screw I snug it up to the blade just enough to give it a fraction of a bend and keep the blade from chattering. I get a wider cut.
I have never seen a burnisher with a cone on the end of it to run under the hook to lift it to the correct angle. Seems hard to do and risky.
Friends don't let friends use stamped metal tools sold at clothing stores.