I spent christmas with my grandparents this year. it was nice to visit them. While I was there I noticed a very vintage looking slr on top of my grandfather's desk. It was a minolta xg-1. I picked it up and It still felt brand new, even though he bought it in the late 70's. There's something wrong with it though. When you take a picture, no matter what shutter speed it's set on the shutter sticks and sometimes doesn't trigger at all? My grandfather thinks it just needs to be cleaned thoroughly. Has anyone ever had any experience with these type of problems? Maybe some insight on what could be wrong. It would be a shame to lose this beautiful camera. He has a ton of accessories and lenses also.