On Saturday I bought a Minolta XG-M with 1.7 / 50 for only $20. I tested the camera with new batteries at the flea market and the shutter seemed to fire OK. (It was set at 1/1000.) When I got home I gave a more thorough inspection at all the shutter speeds in manual mode. At first, on the slow speeds the shutter fired instantaneously, much to my dismay. I kept firing and, occasionally, the speed on the slowest speeds would be OK. I kept firing and playing with it and within five minutes the speeds were 'right on' consistently. I tried again a day later and all seems to be well. Also, on the first day, Saturday, I tried the self-timer. At first, no blinking light would occur but the timing was right. Again, eventually with playing around the blinking light was right and consistent. I am rather intrigued as to this circumstance. I could see a mechanical shutter 'freezing up' due to dried out lubricants and then eventually 'unfreezing'. But the electroninc information as to shutter timing is not explained here. And the 'laziness' of the self timer's blinking light baffles me also. Anyone have an answer here or had similar experience? I have bought cameras for decades and even do minor repairs like changing prisms or internal cleaning. Thank you in advance.