Hi! I took a photo with my Yashica Quartz FX-D and the mirror never came down. The wind on lever is stuck and won't move forward and although I can push the capture button down, no picture is taken. The mirror is definitely not stuck up because it's gummy, I took it to the repair shop and they said it's the mirror mechanism, but the quote of £75 is too expensive for me. Does anyone know how to fix this at home? I've tried removing the bottom of the camera but everything seems fine.. Please help! Thank you!