I know it's not a hi quality product, but sincerely, with the exception of that particular part, the rest is really good! People hear me well when I use the throat mic or the in-ear bone mic. The wires on the part with the 5 holes (see here for a picture of that end:
http://french.alibaba.com/product-gs...552672938.html ) seems to have fires a bit too short and they break when you unplug the wire from the ptt, a kind of design flaw.
I'll check for that idea of rebuilding the wire in question. I also wrote to the supplier to see if they have better quality wires in stock. If not, I'll go for a higher end throat mic.