I received the adapter and it seemed to work for several test shots w/ a super takumar and an M lens, and then not. Following is what I observed.
1) The adapter aperture was fully open, and the small silver latch inside was loose, and worked OK w/ 2 lenses.
2) After dismounting I noticed the aperture blades are/stay closed, the silver latch is no longer loose, and aperture opening doesn't look precisely symmetric.
3) Remounting it on Q and adding lens, the adapter shutter stays closed.
I have attached some photos. The 3rd photo shows the silver latch best.
Is there an interlock somewhere on the adapter?
Does it seem the aperture blades have "crashed?" BTW there was no physical touching of the aperture blades (by me) at any time.
Thanks for your help.