I have ground down the shoulders on a cheap GD 66 and have used a Norton 220 and 1000, followed by various combinations of Norton 4000/8000 or BBW and coticule. I have yet to get the damn thing sharp enough to handle my barbed wire-like chin whiskers. I am beginning to think that the spine may be too thick to allow for a decent bevel. I am wondering whether spending substantial time on the 220 and 1000, with the shoulder leading (as in stropping) would allow me to evenly reduce the spine width. Thoughts, please.