Toggle not locking at all anymore?

[F15E_WSO]

Got this Luger about 10 days ago, had some problem getting toggle to lock open. With some effort it would lock. Now it won't at all. Mag in, Mag out, safety on/off the toggle won't remain back. I've attached a few photos, can see what I think is the "hold open latch" (#26) up with the mag in, button pushing up. Drops down when mag removed.

I've cleaned the gun when I got it, field strip, nothing nuts. Have not shot it as no .30 luger locally so ordered. So no reference on what happens when mag empties while firing.

Any thoughts? I've included a numbered parts list for reference. Thank you in advance

Looked at links below for help. Please refer me there if that is the answer

http://forum.lugerforum.com/showthre...e+won%27t+lock


http://forum.lugerforum.com/showthre...e+won%27t+lock

Sorry, photos of toggle and breech are a bit crap, couldn't get phone to focus on the near field.