Thanks Chris,
Yeah, no big deal to breakdown the cans to get at the end wire end so that I could re-sleeve the cable.
It wouldn't have much meat to hold onto. The section coming out of the split is a reinforced tube about 1/2" long. That seems to have broken for the other side.
I feel that there maybe a twist point there. You can see the little threads on the other side of the heatshrink as well to the left.
I guess that I could try to undo the cable, cut off all that tubing and then try to build up a new sleeve - maybe a small stiff tube - and then heat shrink on top..
and yeah - sad about customer service - gave them a pick and the whole story..
cheers