I found the problem and the solution. This applies to a LH Jig. Do the reverse for a RH jig. If you look down the HELICAL clamp you will see that it is concaved. It is made this way so the clamp will follow the curvature of the shaft, for full contact. It has one position in the jig that is best for any given size shaft. A thin graphite will differ from any larger diameter shaft. The solution is to reset the adjustments, both top and bottom for the shaft to be fletched. First set a shaft in with flat thumb index facing up. Assuming you are going to install LW feathers do the following: loosen the bottom adjustment and move it all the way to the right, then tighten it with the allen wrench, but not too tight. Next go the the upper adjustment, with the clamp in the jig, slide the clamp to the left until the clamp is in full contact without a feather and then tighten, but not over-tight. If you hold the Jig up to a light and you see a gap, then repeat these instructions, because you want the clamp contact to be along the full length. That means both edges of the clamp, so the feather will be flat on the shaft.
I found it is easier to get the adjustments needed then to adjust each feather in the jig or on the shaft with or without glue applied.
If you have a number of LH or RH jigs, the manufacturer has a gauge for each that can be set in the JIG after loosening the adjustment screws. I has a strong magnet that pulls it into the correct setting. Assuming the gauge was inserted in the jig correctly.
If you need to set the adjustment for a STRAIGHT clamp which is flat, the offset is very small, or the quill contact will only be in contact along one EDGE of the feather.
If you have an old model Bitz the two adjustments knobs and set screws are smaller, and easily stripped with a small Allen wrench. Over-tightening will eventually wear out the adjustment screw. You can buy newer knobs and screws for most Jigs.
Think of the problem and solution with Helical jig/clamp as to maximize the adjustment and with straight clamps to minimize the adjustment.
Warning: do not use a LH jig with a right-hand clamp or the reverse. The jigs are not identical. The adjustment slots in the jig are sized for either LH or RH adjustment knobs, not both.