Hi all, my mates Virago 125 was given to him as a non runner, will start on choke and tickover is a little uneven, switch the choke off or attempt to rev and it either stalls or trys to die, carb cleaned using an ultrasonic cleaner, pipes clear, clean fuel and tank, new plugs which will soot up but dry, fuel goes into diagphram in top right pipe, comes out bottom right and sucking vaccum on the bottom up to the T joint behind the carb, ok spark on rear slightly less on front and is enough to hurt lol....any ideas please tia