[TED the DAX]

Hi All,
I'm a newbie, so excuse me if these questions are answered elsewhere.
I've just bought a Tojeiro that was built between 90-92. It goes really well, but I have a couple issues I need some guidance with.

Firstly the handbrake barely holds the car. On reading the file of reciepts I have noticed that to get it throught the last MOT a garage had to modify the handbrake cable because 'the handbrake pads are worn out but replacement would require an extensive strip down'. Can anyone tell me what is involved in replacing the handbrake pads?

Secondly, I have noticed oil weeping from the jag rear diff. Again, on reading the file I have with the car this was observed some years ago as coming from the oil seal where the prop shaft connects. How big a job is it to replace this? How do I check the oil level? What oil should I use?

I understand that the rear diff and brakes came from a series 2 XJ6.

Thanks,
Mark