[mrerick]

The thing that can deliver consistency to trigger pull on a Luger is the flatness of the trigger plate against the receiver. The pressure applied by the take-down lever (in closed position) and the catch at the rear edge of the plate must be exact and uniform. Anything that allows rocking or movement against the side of the receiver will lead to inconsistency in the trigger.

Again, precision flatness of the fit with uniform pressure preventing movement of the plate against the side of the receiver is your goal. That's why you work the back of the trigger plate.

One good thing about having one plate that fits it precisely is that you can transfer and check measurements between them.

Marc