Same fate for my Custom 3 cable here, and just like "expatMat", I'm in France,
so I'm looking for a way of replacing my Earphones ...
My custom 3 are one year old, and to prevent the kink to cut the internal wire, (on the 2 branches)
I did cut the external stiff fabric. The wire is bare now, but way more supple (not a solution I know).
Now 5 new kinks are appearing on the main branch.
Note : I whould be happy if the replacement could take place in the UK, as it is not so far from France ...