I just bought a OM D5 MKII and PT EP-13 uw housing and am having a strange problem with the setup. When I use the kit 14-42mm lens and the EP 02 zoom ring, it all works on the surface to about 30', then the zoom stops working. It's purely mechanical, I can feel the zoom knob gear popping between the teeth of the lens gear. Coming back up makes the problem go away. It looks like a housing problem. I'm going to contact Olympus, but I wanted to see if anyone else has had this problem. I tried 3 different zoom rings, all with the same result. I just started a week long dive trip, needless to say I'm annoyed.