So I promised an update. Well Tim worked his magic on the carbs and timing. He got it so the bike stopped surging at mid revs and re-jetted so that the power was actually smooth line as the revs increased. Test riding it round the lanes and it was transformed into an amazing ride.
However as with this whole project my luck sucks, I rode in the center of town feeling very happy however on my trip the bike completely cut out with no warning. I managed to get it restarted, but the same thing happened three more times in less than a mile. I managed to get to my destination, but I was pissed off. Interestingly when I started the bike to go home it worked fine all the way home.
Once home I checked things through and with discussions with Tim, I think there is a dodgy connection to the coils. I will be checking the wiring through and changing old dodgy connectors.
1. A slow puncture
2. Replace the rear disc.
I managed to do both of these at the same time.