Thanks for the offer but I'm pretty crap at mechanics and I don't get a lot of time to work on my bike. 30 minute jobs always turn into an afternoon or worse so over the years I've learnt to leave well alone ha ha
I've never replaced a master cylinder or bled brakes and I can see a garage bill coming up if I touch it, that's what normally happens! I have extensive history of this LOL 
Foc it, I'll have a look at the Haynes tonight and see how many spanners the job is and go from there........ 
Cover up any paintwork with blastic bags and cloths (old towel works for me) empty your mastercylinder while still attached to you bars (I soak the fluid up with kitchen towel being careful to drop it into a plastic bag to prevent spillage) Loosen the banjo bolt (bolt that connects the hose to the cylinder) disconnect the brake light switch, undo the bolts clamping the cylinder to the bars. Remove the banjo bolt without shaking it around to much and connect straight to your replacement cylinder, clamp to bar, Have a cup of tea.
Refill the new cylinder and put a zip tie around the lever and leave over night (this pretty much self bleeds saving you some work in the morning)
Check your lever feel in the morning and bleed if required.
Providing you dont loose to much fluid from your top hose when changing the cylinders you will find it will require very little bleeding.
