I've recently aquired a Yashica Lynx 5000, with an oily shutter and an inexistent rangefinder patch on the viewfinder. I've gotten a refund and a "keep it for parts" from the seller, so I'm thinking of having it CLA'd eventually. However, the rangefinder really is inexistent. The framelines are nice and bright, but the focusing patch is nowhere to be seen. Covering the viewfinder window and pointing it towards a lightbulb reveals a yellow spot with bright "grains" (very very few) in the middle of the image. I suppose that this is the rangefinder, and that some coating has worn out. Does this sound familiar to any of you guys? Is there hope?