I have managed to break part of the retaining ring that holds the helical mount onto the camera body of my TravelWide. On my bench right now is a ~120 degree semicircle of 1/4" wide plastic with two screw holes broken out.

I am sure that this has happened before to some other TW user: Can it be fixed? If so, what is the best way?

Don't really want to send it all off to SK Grimes for a custom machined ring in Titanium.

DIY suggestions?