Update....
Well brakes still are no where near adequate.
The brake shop that I have been getting most of this work done (over the last 6mths) have come to an agreement that they will refund the costs involved in bore/sleeve my Master Brake Cylinder when I have a new 1 fitted (at a different, more reputable workshop). After having my car for easily 10 days in the last 4mths they blatantly swear their are no issues at all with my brakes, I feel sorry for any mum or dad getting their brakes fixed at this workshop as their lives are in huge danger.
I'll be getting the master fitted sometime in the next week along with a fresh bottle of brake fluid (about the 50th litre in the last 12mths) and then I pray that I have no brake issues for the next 15yrs otherwise im gonna scream so loud that Perth SAU'rs will hear me
The new Master Cylinder was ordered from 'Hornsby Nissan' (Nissan Import Spare parts specialist) for $491 and took 1 week to be delivered to my door. The part # is 46010-75T02 and here are some pics (ok im bored!!)