Like many engineering processes there is always another method and I was very surprised that Jack Rowe did not mention it in those Midway videos. Maybe he wanted to keep this method in the dark well it was used to solve the fore end problem on top maker guns especially if the barrel fore end anchor point was replaced or removed for some reason. It is simple and not that obvious to the eye so it does not stand out like a punch mark. Being simple though the down side is that it is not as quick as a punch a little more work is needed. Remove fore end wood from the Iron fit the Iron onto the barrels to ascertain where the gap needs to be removed. Now that you can see where you need to take up the slack you extend the fore end iron slot buy a quarter of an inch next file up a piece of steel that will enter the slot having a small amount extending into the original slot, heat to bright red push into the slot you have made and rivet it with a hammer top and bottom, then fit iron to the gun by removing the extra metal that is now in the iron slot . Clean and polish the area apply some instant blue or just heat the area gently until you reach the desired colour. If done carefully this method leaves no marks on the Iron and no signs of the added metal.