Picked up a new Goodyear rubber air hose, fittings and swivel joint from Northern Tool to make maneuvering of the rivet puller much easier than the stiff hose and stright joint from my original configuration. Installed both machined tips (A4 and A5) into my pneumatic puller and experiemented with three trial pulls per size. This was a surprisingly simple process with very acceptable results. I'm ready to assemble parts!