In the picture above you can see the exact place the stalk is cut and filled. Once thats done a small pilot hole was drilled in the center of the shaft then a 5mm drill used to drill down the stalk. The length that the stalk is drilled is the amount that your GD stainless stalks are threaded.
Once drilled and tapped with a M6 x 1.0mm tap the stainless stalk is then screwed in. I applied some thread luck or nut retainer medium grade when doing this.