There are actually two different flanges available. The obvious differences is that one had the screw exactly in the center of the flange, the other one has the screw hole slightly offset from center. There are other functional differences that are not as obvious. CHeck the Schaff catalog, they should have the two listed side by side with different catalogue numbers. There was a third flange in the past but they are no longer available. THere are two flanges with shorter springs for smaller actions as well. Hope this confuses the issue.] Newton
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