Remove the rear hardware from the fore end. Cut a piece of black plastic ( I used a plastic lid off of a can of coffee) into a gasket to fit between the hardware and fore stock. Re install hardware and final trim with sharp knife or exacto. This added tension to the fore stock and took any wobble out of the action when the gun was open. I believe it makes up for wood shrinkage over the past 50 years.
Darryl