Hi, I have an Olympus OM-2, in good condition and was working fine until today. The advance lever arm isn’t working anymore. There is no friction or tension when I try to advance it forward, almost as if it’s no longer connected to the machinery underneath. Battery is fine and my film roll shouldn’t be done yet. I took my film roll out and can advance it manually and the shutter will release and allow me to “take a pic” but does not work with the lever. Does anyone have an idea of what’s wrong or how to fix it?