Well its done
K701 recabled with Mogami 2534 Neglex Copper Quad Mic Cable.
Nate had a supply of it, along with the black 3/16" Nylon Multifilament techflex,
so I asked him if he could strip the jacket and shield off the Mogami,
and feed it through the techflex, which he graciously did
Here are some pics (some not so good) of the job:
Stock cable
Mogami laid into the K701 frame
Preparing the 4-pin XLR end of the cable
A happy ending
On the other ear phone there are two small wires which I have not replaced,
but I may leave them for now.