Unfortunately this is a world problem for model trains manufactured in China. Most leading brands have had similar problems, Athearn for one so it is just not Australian models that suffer. The Chinese by the look of it are using cheap plastic in these type of models and so you get problems. If it costs a bit more I am sure most modellers would want to pay that little bit extra on the retail price to use better quality plastic knowing that the model will last a few years rather than a few minutes. I know I would.