started bike yesterday and it ran for about twenty seconds and cut out wouldn't start any more,checked spark, good, but plug wet, compression good, valves going up and down as they should, half tank of petrol,checked feed lines vacum and fuel,ok. Put new battry on and turned her over without plug to clean out cylinder and put a new iridum plug in, it ran for about five seconds and stoped ,no start, took out plug and it was wet again,, she seems to be flooding the cylinder with petrol could it be the carb?? I have tried everything I can think of,,anybody got any ideas,,they would be much appreciated thanks,k