Hey everyone, I just bought myself an Olympus Pen and I was trying some filters on it from an unmarked bin (Just to make sure they fit). I put one on, then when I tried to unscrew it it just ended up unscrewing the whole fixed lens mount. I've tried all the classic filter removal techniques, freezer and rubber band and nothing has worked. The filter is tiny, it's 22.5mm. So it's very hard to get a proper grip on it. What can I do? I'd be happy to leave it there, but I hadnt cleaned the filter first!