Hi Guys
Sorry I haven't got back to you before.

Bruce - I'm not quite sure what you mean by the number changing - is it still the same part or does it change depending on what month the machine was made?

Calvin - thanks for looking that out for me. Obviously if I can get a part here in Australia it would be more convenient for me but if that fails I'll get back to you to organise one from you.

Thanks again to you both.