A not so good start to the week - go to start the bike up, turns over, fires up but sounds very rattly, engine then cuts out as tickover very low even with choke on. Refuses to start back up again, and a very strong smell of petrol. Leave it for abit thinking I may've flooded it. Go to start again, no play, more smell of petrol. Start checking things, fuel pump ok, so off comes the cover, air filter, damp inside carburettor no 2. Go to check spark plugs, no 2 is wet. take it out, turn engine over and there is almost a fountain of fuel coming out of the spark plug hole. Now looking like either the float is stuck in the carburettor or one of the jets has moved so it's pumping fuel straight through... anyone any thoughts or ideas??