@Raiper341 / @fundation2000,
Try this example, it might help: https://dl.dropboxusercontent.com/u/184657779/C2_demos/viewportHUD.capx
I put it together to demonstrate how to position HUD objects for different aspect ratios but the principle will still apply to help you, I think (hope). It uses an object with the scroll-to behavior to put the camera view away from the edge of the layout - in cocoonjs this should make the zoom appear symmetrical about the middle of your screen.
Edit - just looked at the date of the OP - d'oh!