Hi David - welcome to iKC! We're glad you're here.
OK - I have to admit - I had to look up what a German lever lock is. I mean I got the German part, but I did not know about lever locks. Now I do - so I already learned something within an hour of you joining. I think that is a record for me!
And that's what makes iKC so great....the sheer diversity of all.
Take your time and browse around, and please feel free to shout out if you have any questions. There's always someone who will respond.