But surely all the good folks (around Bridget down under) do say pin, as in pin and paypuh?

Tread softly on that very dangerous ground, maverick. Those of us living down under are acutely aware of the differences between accents on either side of the Tasman, even if the rest of world is too aurally deficient to notice. Try calling a Canadian an American, and you'll know how A NZer will react if you say that the NZ accent is indistinguishable from the Australian.