Hi
@G Daddy,
if you do eventually decide to pull through some new cable I would strongly suggest to NOT use the existing cable to pull it through.
My suggestion would be to use the existing cable to pull through a piece of much stronger wire of a similar size AND a smaller wire.
You keep the smaller wire aside for the moment to serve as a backup in case something goes wrong. Tie it off at both ends so you don't loose it.
You then connect your new cable to the stronger wire. Don't be in a rush to make that connection. Try to carefully join the wire so there are no sharp edges to catch when you pull it through. Also try to avoid the join being substantially thicker than the wire. I have sometimes stripped off all the insulation soldered the cable to the draw wire and then put heatshrink over it all. I have found that one of the wires in 240V house wiring cable has the required strength and flexibility to do the job. Since the conductor is copper it is easy to solder to your new cable.
If you get resistance pulling it through in one direction you can try pulling the cable through in the other direction. Another trick if you get resistance is to rotate the wire as you try to pull it through that point to get the cable over the 'lip'.
Once you have the new wire through, you can pull out the smaller backup wire unless you think you may want to pull other cables through in the future.
The main ingredient in this exercise is patience. I learnt all these tricks back in the late 60's in my days at the PMG as a technician in training. The linies in those days certainly knew all the tricks. They were still pulling huge lead covered cables with paper insulation over the conductors.
cheers
Mike