I am fitting the AEX wedge to the trailing edge of the left elevator. This is the first trailing edge I have worked on. The instructions say mark a line 7/32 from the forward edge of the wedge (which I interpret to be the wide edge) and center this line on the pre-drilled holes in the top skin. When I do this, the wedge extends about 1/4 inch beyond the trailing edge of the skin. I was expecting the trailing edge of the skin and wedge to line up with each other. Do I have it right. If not what am I doing wrong?