I dont know if you can see them in the pictures, but I came up with, I think, a new idea for the alignment pins. I use the "line up and drill through" method that Sixby and others have described to align the limbs. I filled the top with 1/4" mosaic pins I got from a knife making supply place. It really looks nice but the bummer is that it is almost impossible to drill through the glass without a split or splinter.