I tried searching the web and asking on various forums but I have yet to find out if this issue is something to worry about or not. My Nikon FE is in pristine condition and I'm very pleased with it, however, I noticed the little steel tab on the body lens mount that indexes the AI tab on the lens only moves in one direction. Comparing it to my FM and F3 I realised that it is meant to be spring loaded and 'ride' the AI tab as the aperture is adjusted. Looking inside it looks like there is a spring or cord that is meant to provide the suitable tension against the tab and allow it to move with the aperture of the lens. Obviously it does move fine in one direction, it just doesn't return when the aperture is adjusted in the opposite direction. I was horrified to discover this half-way through a roll of film but all the pictures came out fine. Is this AI tab return something to worry about ? Is there a technique I can use to compensate for it not moving back (my pinky finger could probably slide it back around with the lens aperture) ?