Does anybody know about spark plugs. My Mondial is fitted with N6GY Champion Sparkers, the book of words says these are now discontinued. I understand the replacement is N6YCC. I came by a set of N6YC Racing Specification plugs, does anybody know the difference between "ordinary" and racing Spec. plugs. For what it's worth, they don't look any different to any other type. I am having difficulty finding the N6YCC plugs, so is there an alternative ? NGK, Bosch. etc.