Put the fletch in the clamp and put theshaft in the jig. Then take the clamped fletch and do a dry match. By that I mean do not put any glue on the fletch but adjust the clamp so that the fletch is on theshaft where you may want it to be. Then you can loosen the jig dials a bit and turn/adjust them until you get the amount of offset you want and still have the whole length of the fletch making contact with the shaft. Once you have everything where you want it tighten the jig dials, put glue on fletch and get started. Have fun!