Years ago, I owned the Harmonic Technology Photon Digital cable - as described in this review.
Harmonic Technology actually distributed the Cyberlight & Photon cables that were manufactured by Inex Innovation. After Jim Wang retired, Inex took over the distribution. Now, Inex is defunct.
Have you tried contacting Harmonic Technology here.
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Neutrik connectors are well-known but aren’t the greatest quality. Check out the offerings at VH Audio.
Re: putting back together. As long as the Cyberlight leads can be connected to the XLR pins, the outer shell isn’t really necessary. Be sure to isolate the leads by carefully wrapping electrical tape around the connections to the pins. Then fashion some kind of outer covering to replace the original shell. Perhaps, a PVC tube for plumbing. This jury-rig should work fine as long as it isn’t manhandled.
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XLR’s weren’t fitting snug in the output of my dac
Have you tested to confirm that the looseness issue isn’t with the DAC XLR connectors vs the cable XLR connectors?