if I under stand what your problem is. I 'tinned' the end with silver plumbing solder. on my bike I had the cable fray and pull out. It was going good, then there was a bad throttle response. I looked over the bike and it had pulled. After tinning, works great. The solder gives it more "sturdiness" to be clamped.
When u solder the cable, make sure you flux it well, and dont over heat it, as that will weaken the wire and it may break when it is pulled hard. Clean up the end and clamp.
hope this helps if I had understood you correctly.