Paul, in my experience the "right of center lever" is an overrated consideration. Left of center is an indication that the Bolt and Boltplate are fully engaged and near or at the maximum service tolerances. In replacing the boltplate it is best to use a surface grinder to get a perfect fit. This usually will not correct an "off face" condition. As Dean said, if the gun is tight, left of center really does not matter.
As a result of use, the greatest wear occurs on the breach faces and the radiused part of the lugs. These surfaces are mild steel and subject to compression. As compression occurs the barrels become loose. The recoil shields and hinge pin are hardened surfaces.
In most cases with a new Double, the barrel flats are not in full contact with the watertable of th reciever. With shooting, the breach face compression will bring these surfaces together. As this occurs, the lever progressively moves to the left.
If your gun is loose or "off face", the best fix is to lazer weld 65 Rockwell stainless steel on the hook of the lugs and refit the barrels.This turns the hook into a hardened surface to mate with the hardened hinge pin. Beware of guns that have been tightened up by any other procedure.
Brad
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