Step down adapter for 77mm to 67mm flip mount CMC?

Hello!

I have the 77mm Nauticam flip mount for my CMC, but just purchased a port that is 67mm.

Does anyone know of a step ring that I could use (77 >> 67mm) to be able to use the original flip mount w/ my new port rather than having to buy a new one (they are so expensive !! )

Thanks in advance for any suggestions!

I'm unsure how these are all attached, I'm not familiar with the Nauticam gear, but you can get threaded step rings 77mm-67mm or 67mm-77mm at B&H or any other large camera store. Just don't buy the cheapest ones as they bind and would be no good for UW use.

Ex:

https://www.bhphotovideo.com/c/product/11687-REG/B_W_65069434_67mm_to_77mm_Step_Up.html

Otherwise if its some sort of friction mount, you may just have to be creative.

Cheers,

Chris