While I appreciate the asthetics of antique Lefevers, the dollshead feature requires two opposing surfaces to be in contact. The breachface and forward side of the dollshead. In theory, the dollshead would not allow the barrels to get off face. But we know better than that. Plastic deformation occurs and these opposing surfaces no longer are in contact simultaneously.

If the barrels get off face and are put back on face, contact of the forward surface of the dollshead is lost. Now the frame has to flex for the dollshead to make contact and begin to bear the load (load up).

Still using a phone for this, now in DC. Gotta run