larry i have another question on spark plugs? the wizard 5 now uses champion J8C. what number plug was used before that one. because i will look around there might be some around some where? i have three sets of J7J or are the new number plugs better? also i have a powerhead from a mercury mark5 is it interchangeable with the wizard super 5 if not tell me why please.one more thing what is the oil mix to one gal.of gas for the wizard super 5 how many ounces of oil? thank you much larry