Started using the EZ, practicing on some old nocked shafts that needed re fletching. Am running into a problem seating the shaft into the jig. I've indexed the jig so the nock is right with the cock vane. However, because the half moon knock is so shallow it sits ON the partition that is normally straddled by a deep nock, which in turn holds the arrow steady while the jig is being closed. Crossbow bolts sit rather loosly in the jig, and can wobble one way or another while it is being closed. This isn't condusive to precise vane application.

Long story short, is there a trick/gizmo that can be applied to hold the bolt more firmly in the AZ jig while closing it?