Has anyone converted their Olympus PPO-EP01 port from an OM-D port to a PEN port? I was told you could remove the tab and there was a screw there that you can then remove the outer ring and are left with a PEN style port. However, I removed the tab and don't see a screw. Do I need to jimmy the cap off to actually get to the screw or is not built to come apart after all? I hate to ruin it if it won't work anyway.