mrfritz44: Well here goes. When you place the fletching clamp on the arrow shaft (like you would when you install the fletching) you can see light at both ends of the clamp, (I could on mine) or the clamp will teeter on the center of the clamp and not lay flat on the shaft. You have to form the clamp to fit the shaft. I had to hold the jig in front of a light bulb so I could see the light between the clamp and the shaft. As I said before the is a teeteus job. Helical wraps AROUND the shaft, where the helical clamp is FLAT. Put the clamp on a flat surface, it's flat, right? Look at the helical on an arrow, it is wrapped around the shaft, how can a flat clamp do that? It is hard to describe the areas that I ground, With the clamp installed in the jig, most of the grinding was done about 2 1/2" from the notch on the clamp (nock end). Like I said it is a fit process. I had problems with the point of the feather fletching staying put after glued, this solved the problem. I hope this helps. A photo would help but I don't know how to enclude a photo.
Twoshot Jim