z1bman wrote:have you tried using a couple of the old mixture screws? there are small holes in the throat of the carb body by the butterfly valve this is the main cause of not being able to correct the mixture
Going to try and remove one screw , and then insert a pointed rubber plug, see if that changes the colour tune colour, if it does not then something else to check, have checked the float heights today, okay, if the levels are high that can show yellow all the time.