I managed to lube the mirror linkage 'squeak' on my 'gift' Canon A1 after several attempts, following a web-site instruction -- I used a piece of electrical 'Fuse-wire' with a small amount of 'Three-in-one' oil on the tip and touched it down into the correct place, and after several months it suddenly has stopped the 'squeak' BUT now I find the faster shutter speeds are slow and over-exposing -- it seems OK from 1/60 downwards. I have inspected both sides of the shutter blind and NO OIL had leaked -- anyone with any ideas please ?