After installing the #1 formers I worked on the attach angles. These required bending, and I had visions of a broken vise all over again. But using the new vise, a v-notched 2X4 and a steel pipe did the job cleanly and accurately.
Installation went OK, but the right side slipped on me while drilling causing a slight gap between the skin and the former. I think I can use a spacer between the former and the skin to prevent any skin dimpling.
Once these were in place I started preparing the rest of the formers for installation.