by Paul Cook - North Sydney Oval is the venue for this week’s ABC Shute Shield match of the day and it’s a heavyweight clash indeed as Northern Suburbs and Southern Districts, currently the top two on the ladder, meet to decide which of them will maintain their unbeaten status for another week. Norths are enjoying their best start to a campaign for many a long year with four wins from four although they readily admit that they are still a work in progress. Defence – as it was last year – has been their foundation and they are proving to be a very tough nut to crack. They are conceding an average of less than 9pts per game thus far but will have to be at their most miserly to hold out one of the competition’s most potent attacks – when it is firing. The excitement machine that is the Rebels