Wetpixel moderator Luiz Rocha has put together an article explaining how to modify the Subal D2x hotshoe in order to eliminate erratic camera behavior.  According to Luiz: “The problem: The D2x in Subal housings would erratically not fire the strobes or not save random images to the memory card. This is true for Subtronics and Sea&Sea strobes, but appears to not happen with Ikelite strobes.” The solution is removal of one of the hot-shoe pins - follow the link to find out how.