Omega Rapid 100 I have a one piece Omega rapid 100 The magazine pressure plate stopped working on me the last time I shot a roll. So the pictures were basically out of focus . I soaked the pressure plate mechanism with light fluid and then blew it dry to clean out any dirt or gummed lubricant. And so far as I can see the pressure plate now moves against the film with the final stroke of the film transport plunger And yes in operation it really does sound like a round being chambered in to a gun . I am not a camera repair man so I have no idea of if and what I should lube the mechanism with.