Hello , I have a PT 22 and a C770 ( older one ) . I bought a Sea and Sea YS 60 with a 4 pin connector ( N type ? ) . I read the Heinrich - Weinkamp has a replacement for the Olympus bulkhead . Has anyone had experience with it ? Also is the original bulkhead really as bad as stated on forums ? Lastly , is there any other options for using this Sea and Sea YS 60 set up with my C770 with a hotshoe . Kind regards Kevin