Dwight, interesting but I'm not convinced.
A bit of play between the toggle, receiver and frame ears is not that exciting. Accuracy of the gun is based on the fit between the areas where rear toggle rests against the receiver.
The toggle pushes against these flats during recoil and if both sides impact at different times, the gun will either pull to the right or to the left, influencing accuracy a great deal.
As a result, during post war Mauser Parabellum production these were the only parts that were physically matched to each other (that is why the rear toggle was marked with the gun's serial number), the rest was produced with such tight tolerances that 'in the white fitting' could be skipped altogether.
It would be a nice test to shoot a DWM P08 with the 'inner ears', then remove them and repeat the test. My bet is that you will not notice any difference whatsoever.
