Gap

[mrerick]

The angles and the surfaces of the sear to firing pin faces are fairly critical. Not sure of the mechanism that would cause full auto firing, and how it might relate to them, but it could be part of the problem.

Don't try and bend the trigger lever that is mounted within the trigger plate. It's hardened steel and would as soon break as bend. It would be useful to see it in detail as well.

I expect that it's possible that the fit of the trigger plate may be involved. How flat and tight does the plate fit against the receiver?

There are probably good sources for Luger parts in Europe. I'm familiar with Tom Heller since I've dealt with him over here. Since many of us on this forum are from the USA, we probably think of Tom first.

Marc