Does anyone know where I can purchase the correct fuel fill gas cap tool? I have a 1974 170 and every tool I've purchased has been too big. The prongs are about 1 1/4"outside and about 1 1/16" center from center pin to center pin, from inside pin to inside pin it is 7/8". The boat is 2 hours away and no marina carries the tool so I've been purchasing online with no luck. Any help would be appreciated.