I have the Zipp Vuka Clip with Vuka Shift extensions. I love them, but I can't seem to keep them tight enough. I snug them down by hand and then add a little bit more tension with a wrench. But on long rides typically over two hours one of them inevitably loosens up. How do I stop this from happening? Can I put some locktite on the threads of the collet? Frankly I'd just epoxy them together if they didn't have to come apart to replace the cable. Anyone have any great tips or suggestions for permanently or semi permanently securing the extensions to the clip that still allows the cable to be replaced or any other necessary maintenance?

Thanks