Hi Graeme. Mechanic spoke to zf at arndell park. Apparently the 05 v later models is different and not compatible. New or otherwise. In my case I tiink it is stuffed as well but zf have advised replacing with a new one not a good idea. If I had some time and money to spare would like to try a new one but either going to persevere or rebuild the original box and swap it over. Sell the 2012 box. Reflash was also tried. No good. An auto expert at penrith told me a while back that later models had a
Different valve set up to avoid the premature failures earlier models had.