Lugerdoc
When there this close to working, do you lap the action or use a jig?
Do you use a weight gauge to test for binding or just use feel?
Do you have a spring set to use as a standard, one that you know is correct for most Lugers?
I am just curious as you specialize in Lugers you may have developed some tools along the way to help you.
Gewehr
You can mess up a luger pretty easily, that gun sure shoots nice, be gentle

Please don't hammer on her or get to rough-- don't laugh it happens more often than we care to count, I like your gun
Vern