FYI - Nauticam have released a replacement front dial ring gear for users who have problems with the ring slipping or not engaging properly. This is a known fault of the Nauticam RX100 housing due to manufacturing tolerances of either the housing or the camera itself. I got mine from the Australian Nauticam importer. Installation can by done by the user via two small hex screws.

Good luck!
David

Good luck!
David