Yesterday.
A Kiev 4, it had a couple issues - the shutter slit width was slighly uneven, and the lower curtain was locking on the first safety notch, not the second. The right hand tab of the curtain latch had been messed with, and the lifting ramps were too high, after rectfying these issues the slit width was too narrow for 1/1250 to give an exposure. Resetting the slit by trial & measure gave an accurate 1250 & all slower speeds, the slit is now even in width, lower curtain egages the safety latch as it should, flash synch reliable after cleaning the contacts, and while I was at it I repoised the meter needle so it indicates the same regardless of the cameras position.
This one really needs a complete overhaul, but the above issues could be addressed only with the shutter in the body casting, now I know that all it needs is cleaning and relubricating. It's a very pretty '69 that I bought off feepay a few years ago for the H-103 that was on it.o