Yashinon DS-M 50mm f/1.7 aperture pin problems

[alencr]

Hello all, this is my first post in this forum.
Sorry if I posted in the wrong section or if there was already a thread like this.
So I bought this lens with an focus confirm adapter for my Olympus E-410.
It was like 15$ alltogether because the adapter didn't work fully.
It registers the aperture (sometimes f/2.8, sometimes f/4)..
And I cannot vlose the aperture fulla, It closes to f/2.8.
It seems like the adapter "mountain" on which the aperture pin sits is too low.
How can I get the pin to be permanently depressed?
Thank you.
Sorry I don't have photos, I'm in school right now.

[Mos6502]

Probably the simplest way would be to make a washer out of thick paper or card and place it in the "lip" of the adapter which presses the pin down. But it might not push it in far enough.

[alencr]

Actually, I depressed the pin inside the lens with a pen.
Now it closes fully.
The only problem is that I won't have the ability to auto-close the aperture on half-clicking the shutter release on my Zenit but I don't shoot film so much.
I already love this lens!
FYI; i have an eyemik 135mm f/2.8 and a dirty Auto Revuenon 70-21mm f/4.