> > If you are certain that it's not the oil, then it could be an aging
>spring.
>
>Ah, so I would need a replacement spring from a good lens, I assume. How
>hard is it to replace the spring? Do the blades scatter everywhere if I
>remove it?
>
>chris
I forgot, if you decided to remove the mount, try to leave the aperture ring
untouched or be very careful. There are a tiny ball bearing and a spring
underneath. They will jump off.
regards,
Alan Chan
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