Hi David,
Holden DSM had another listen to it last Friday. Said that he doesn't feel they will be able to fix it. I told him, well you better fix it because it sounds **** for a new model car. He said to me that he had about 5 other cars to listen to in Sydney this week and would do some research and get back to me Friday. I am persuing other legal avenues at the moment to rectify this situation.
Cheers mate