Spinergy REV-X Rear Hub Part - HELP!

I have a set of REV-X Spinergy (four blade carbon) wheels which I love. The rear hub is Campy 8. I am looking for the small retaining ring spring that goes around the cylinder that holds the pawls in place and forces them outward for the ratcheting. If anyone knows where I can find this part or even the formal name of it I would be thrilled and my wheels can go back in service. All else is fine with the wheel set. I have even had the carbon blade joints xrayed for stress fractures and they are clear.