G'day fellas, I have just purchased a ZipTy fuel mixture screw for my late model FCR carb. The carb is bolted on to a 02 640 SM. I understand I will probably have to loosen the clamps and turn the carb sideways. Can I remove the OE mixture screw from the carb without taking the bowl off, or does the bowl need to be removed. Any help muchos appreciated. Simon.