Little update guys. Stripped the carbs out again and reset all the pilot screws. Reassembled and bike fired straight up. Wasn't running properly hunting quite a lot with a delay on the throttle. Basically slow to respond to input of the throttle also seemed to stick a bit before the revs dropped. After letting it run for a good ten minutes switched it off and left it for 20 mins. Came back out and it started up straight away. Left for 2 hours wouldn't start and now back to square one doesn't fire at all.