Stretching Clutch Cable?

[Rosco]

Ok, about 6 or so months ago, i had a king cobra clutch assembly, new flywheel, new heavy duty teflon lined clutch cable installed. Everything has been good with it so far. Until about 2 weeks ago, i noticed upon starting my car that i had about 2 inches of dead play in my clutch. After about an hour it went away. Now a week later it's happening again, and it hasn't gone away. It actually happened after i roasted a z28... Other then another stretched out clutch cable, or a non-functioning self adjuster what else could it be?

And is there anyway to test anything to determine exactly what it is without having someone drop the tranny? Also, if it just another stretched cable, how hard is it to replace yourself? I had a ford dealership install everything before, and I don't feel like dropping money out of my supercharger fund to have it installed again.