1967 J/E 6hp, has what appears to be the original carb float in it, it's yellow with a bunch of brown oil stains on it. The needle has a rubber tip and is sticking so this thing needs to be rebuilt. However, there apparently isn't a carb kit for this engine that includes a new float. (the Sierra part# is 12-7043 which replaced the earlier part # 43-9071. Neither of these kits have the floats). Will a float from the 9.9/15hp fit or does anyone know the proper sierra replacement number for the proper float or have any other suggestions? Many thanks.