Have you posted in the Tree World web site?
http://www.treeworld.info/ This is a new site operated by Eric Frey (Ekka) in NSW. The site is a great source of info and conections for all the professionals, amateurs, recreational climbers and even homeowners can ask questions there. The site is free to join and his information is timely, clean, friendly and very educational. Nice climbing and safety videos too! Great location for all climbers.