Abstract: Embodiments of a tool are described. The tool includes an assembly plate having a top surface and a bottom surface. The assembly plate also includes a raised area on the top surface, the raised area centered on a central alignment hole extending from the top surface to the bottom surface through the entire thickness of the raised area. An alignment ring is formed in the top surface of the raised area, wherein the alignment ring surrounds the central alignment hole and is concentric with the central alignment hole. A fitting including a base tier, a plurality of stacked concentric tiers of different radii on a first side of the base tier, and a retainer on a second side of the base tier, wherein an axis of the fitting is adapted to be aligned with the center of the central alignment hole.