have i managed to buy a camera with two faulty lenses

David Nebenzahl wrote:
snip

The AV-1 works as has been described for other cameras of this vintage:
if you operate the f-top ring, the lens does *not* stop down.

And it seems as if your lenses are working normally as well. I just
checked my Canon FD lens (50mm), and when removed from the camera, the
aperture seems to sit about halfway closed, not fully open.

Of course, with the lens mounted on the camera, it should be fully open
when viewing through it. What happens when you mount the lens on the
camera?

I just checked out a lens mounted on an old Canon AE-1 and, ta da, all you
do is slide the stop down "thing", and then you can check if the iris
operates at various f stops. Hopefully, the iris "leaves" or whatever they're
called aren't sticking because the lenses were exposed to extreme heat that
might cause the internal lens lubricant to get sticky.

This happened with a Canon FD 135mm lens many years ago. I could see the
lubricant on the leaves, but removing the lens from the camera and hitting
the lens on the palm of my other hand would loosen the leaves.

You may not have a big problem.

FWIW
Dick