Remember, any LTM camera may be overdue for a CLA. The battered 1939 Leica I bought long ago for its Nikkor lens quit working maybe 10 years ago. Probably cleaning and lubing would put it right. An early postwar IIIc has bad shutter curtains. The shutter in the Canon P bought new is sluggish, which may be due to years of storage. A Canon 7 bought second hand for its f/1.4 lens in 1968 seems to be working. Older cameras are always a gamble. However, a camera with the build quality of Leica after an expert CLA should be cost effective over its remaining years.