Well i finally got my bike back yesterday
it looks like a bit of metal went through the starter gear and damaged the gear on the crank shaft.
Took two goes for the mechanic to find it as the damage was so small you can only see it with a magnifying glass. It looks like it was hit with a centre punch making the tooth a couple of thousand's wider on the end of the tooth.
The end result was a new crank shaft as it's all one piece.
The local dealer (Kawasaki Country) said it's all covered under warranty, all bearings rings etc.. were replaced
basically got a new motor back in the same cases.. they inspected every part in the gear box etc... for damage
Nothing is damaged or missing so it has been put down to a foreign body from manufacture or elsewhere..
while I had no bike I had a trip organised in which Kawasaki Country gave me a loaner so I could still go...
Can't complain about the service and follow up provided by the guys... just the back order system from Japan to Australia really sucks in how long it takes.