The dreaded parking brake.....Cables.

[Si902]

Evening all

I'm having an absolute nightmare with replacement of the 2 rear cables.

Did the shoes discs and pads a week or so ago ready for MOT, all relatively simple and straightforward, but (and I knew it wasn't up to scratch) failed on the parking brake, it was basically doing nothing.
When adjusting up after the job I could tell they were stretched beyond belief as there was a good couple of inches of cable visible where they hook up to the adjuster section, and I couldn't get any more adjustment.

So, I bought two rear cables from ECP (Pagid), set up to do the job, Disassembled rear brakes, unhooked from adjuster section and tied what i thought was strong enough string to the eyelet before pulling back through and removing.
Removed, hooked up the new replacement to pull through and got snagged, the string wasn't up to the job and snapped....Ooops!

I then tried a wire coat hanger, managed to hook on but still getting snagged. I eventually got it through a couple of times, however comes out at the side of the console, between the carpet and the tunnel it should be inside.

Ended up removing rear seats and prised up what I can of the carpets, It seems the route it needs to take only has a very narrow gap to route inside the centre "tunnel" so it pops out in the correct place and alignment.

Am I missing something? Does anyone have any hints, tips or tricks?
Pictures would be amazing.

I've tried searching but found nothing which explains the routing inside the car.

Thanks in advance.