If anyone gets into this same predicament...
Remove those stupid cable holders, they'll pull out with a twist backward and forward.
Forget the expensive clamps and buy late model clamps which grasp the outer end of the cable. Problem solved, cheaper than the clamps.
part number 419452
While you're at it, if the inner cable is stuffed it's 1.50mm control cable, costs about $2 per metre.
If you have double choke cables, just buy 2 metres of 5.00mm OD and 1.50mm ID solid control cable, calculate the lengths you need for each cable run, cut the outer then do a 450 degree circle around a piece of 6mm or 1/4" round and cut to length after fitting.
You have just made an expensive cable for probably less than $10 and didn't have to wait.