I have taken a chance and lubricated some of my old cameras from the base plates -- I could not undo all the screws on some but I managed 1960's Asahi Pentax SV and Spotmatic, 1970's Canon FTbn and my wife's Nikon FG -- on undoing the base plates I saw some levers and cogs -- I put ONE DROP of 'Three-in-One'oil into a developing dish and carefully picked up some on a piece of thin electrical fuse wire and touched it onto the cogs and lever pivots -- well, the cameras wind on much smoother now .. if any of you have any comments on 'Lubrication' please add -- Thanks --- Peter