Fuji GA645Zi - lens assembly is loose

Hi - it looks the post has severely damaged a package inside which nestled my Fuji. The lens cap was distorted and stuck to the inside of the filter and the camera was making a strange 'clunk'. Close examination showed that the entire lens assembly had come away and was hitting the back of the filter. I've been able to remove it and it looks like a simple re-insert, twist and lock to put it back together. But I'm not sure...

Anyone had any experience with such an issue on any of the GA series?

Cheers.