Clunk Sound when braking from front end When Cold V6

[oztech007]

Hi guys,

Have a VY Calais V6 and everytime I brake, there is a Clunk Sound that comes from the Front End. It mainly happens when the car is cold and goes away after a few Km's.
It mainly happens when applying the brake, even just a light braking does it. It seems to be that when the car dips towards the front.
Doesnt take much to make it Clunk.
I have Tightened every bolt under the car that I can see. Has new Stabilizer Bars and Bushes. Has Nolathane Caster Bushes.
I cannot work out what the cause of this Clunking could be.
Anyone else experienced this problem.

[D3CID3R]

how are your rotors?