Called Griffin & Howe, they were helpful some. Seems during the 40s through the 60s they sold a good number of mounts to gunsmiths most of which did not install the mount they do, then or now.. But they gave me some ideas. One thing I begin to realize in messing with it is that it doesn't behave exactly like a regular Weaver or Redfield. Being cantilevered over the bore from the side, tightening the rings the rings more on one side front or back change the windage a bunch. More than I would have imagined. With .008 brass shim in the front we are back in the range of adjustment. I tried .016 and it was too much. G&H from our conversation will actually cut the dovetails on an angle like a Picatinny rail to center the elevation on a particular scope.
