When I bought my unit used, the guy simply used vice grips to clamp the cable once he had it pulled out far enough.
Probably when I changed the blower, I don't need to give it as much fuel and I don't need to grips anymore, it stays where I put it for hours.
Also, don't know why these newer cables are wearing out. I think this is the original cable on my unit, 19yrs old, 12000 hours and no signs of wear. Go figure.