I have a pair of DMT 10" duos. One is a course and extra course, and the other is the fine extra fine. I am hoping folks can suggest some specific videos, resources, tips for sharpening. I am getting better, but I can not get that final true shave sharp. I seem to have a hard time matching and maintaining the angle. I am going to grab a beater knife out of the garage today, roll the edge, fix, and repeat.