Hi, i have a GX1 and somehow the rear dial got stuck, like when was pressed. I blame one of my friends who maybe handled the camera. I can turn the dial with some difficulty but the button doesn't work, have the ExpComp stuck on -5/3 ev, I can press the dial , but it doesn't "click" like normal. I'm thinking on opening the rear unit of the camera and see what can I do. it's a bad idea? What is the screw size? they look very tiny! I'm not sure if i can send it to repairs in my country. sorry for the phone cam quality photo. If this happended to anyone, I'm interested to hear their experience.