Yeah mate, I'm in the Newcastle area (NSW) and your problem is pretty common. Consumable parts (filters, brake linings etc.) are generally available, but just about everything else is order in from Japan. Kawasaki Australia keeps very little stock on hand, because it costs them money. I pulled the drive shaft out of my GTR last year, and waited 8 weeks for a band clamp (special type, of course) and an o-ring with a back up ring, before I could put it all back together. Webike Japan can be your best friend, but their postage costs can be a bit high.
I know this doesn't help you much, but it is what it is I'm afraid.