Considering that any method of predicting winners is always going to be a partially imprecise exercise, things can always go astray.

The lack of truly run races [pace] in the eastern states -especially in Sydney and Melb. - have become a handicappers nightmare, so I guess it would be throwing a lot of systems out of whack too. The form of runners is almost impossible to handicap or compute, if the race pace is not true. It's become so bad, that I'm thinking of switching all my betting to WA only.