One very grimy Pentax KM... My sister-in-law's camera, given to me by my brother-in-law at Thanksgiving. Going to a party at their ranch tomorrow and seriously thinking about giving it back to her. Insides were clean (nobody ever touched the mirror). Replaced the light trap seals and tightened the front of the lens which was falling off. Meter's not responding to light, but battery connection is good (needle rises slightly with battery in) and "battery check" (needle jumps up at certain ASA/Shutter speeds) works. Not using in-camera meters these days anyways so not going to try to fix meter (unless it's easy and someone knows how). I decided the camera looks too cool with the patina, so I cleaned just a little and tried to keep the look.