I just checked the premaster diagram on the webpage. It is not correct. I have been able to cut the pavilion using Jim Perkins’s original diagram from facetdiagrams.org. The pavilion angles are wrong. The original diagram is kind of fuzzy on how big the corner girdle cuts should be. I just reversed steps 3 & 4 and cut them to look like the picture on the diagram and everything else matched up. Here are pictures of how it turned out.