Doubledrop,
If you see it done one time, you will realize that Snuffers are bar none the easiest broadhead in the world to sharpen to hair-popping sharpness. It would only take 2 minutes to show this to you, but....
Sitdown somewhere comfortable and hold your arrow in your left hand and rest it on your left knee with the broadhead sticking out about 2 inches. Take a good "smooth" grade file and rest it on two edges at a time. Think of the Snuffer as a pyramid. It has three sides, with each side have two edges of a blade. Starting at the back of the Snuffer, push your file forward and to the Right. Your file will be filing the entire edge (front to back) of both edges. After you complete one full pass, twist the arrow to the left and repeat on the next side of the pyramid. I repeat this about a dozen times for each of the three sides (36 strokes in all). Start with pretty strong pressure on the file and end up with very light pressure towards stroke number 24 or so. They should be hair shaving sharp now. If you want to take them to the next sharpness level (hair-popping sharp), repeat the process with a ceramic rod (another 36 strokes - 12 or so on each of the three sides).
There really is no need to change the bevel on these heads as they can be sharpened so effectively as described anywhere in the field with just a file.
Much easier to show than discribe. Maybe I can figure out a way to post a video of it. It really is rediculously easy once someone shows you how to do it.