I use that same system w/ the two angled files and leather strop. I paint the blades with a marker, and push the head into the file 5 strokes per side pretty hard. Repeat until all of the marker is gone (shows that blade is being sharpened fully). Then go to three strokes per side with medium pressure... then two strokes... then one. Then go the opposite way with the head... lightly... one stroke per side and repeat. Stroke lighter and lighter until the only pressure is the weight of the head. At this point, the head should shave easily. Use the leather strop stroking only once per side and repeat several times. At this point, the head should POP the hairs off. I use this method exclusively now... and it WORKS!