My 65mm and 55mm lens for my C330 are not working correctly. Excuse me because i don't know the technically words for the parts on the lens so i hope you can understand. The shutter speed button is sticking. When you crank the shutter button down (either with the camera or with your hand) then click the button to take a photo the shutter button comes up and either doesn't click to close or goes very very slow. My questions are can i fix this myself, or should i pay someone to or perhaps just try to replace it because it would cost too much to fix. Or if it even can be fixed? I'm rather good at fixing photography equipment it's just that i moved apartments and i don't have a good dust-free area. Thanks.