Finally sorted the over reving & hard to start problem.
Turns out when I had the carbs off I didn't seat them correctly into the airbox so there was an air leak. Also, I kinked the fuel tank breather hose and one of the carb breather hoses.
Video below.
http://youtu.be/tXSbX0spgDE
Its running very rich, probably wasn't in Japan but here in Dubai it is...you can hear the bogging as I open the throttle and it doesn't want to be ridden at all, as soon as I release the clutch in first gear the revs drop...needs some fine tuning which I'll have to do at the weekend.