I made a few modifications to the master rod design. Nothing relating to important geometry or dimensions, more cosmetic fillets, profile transitions, tooling availability or where I thought machining steps might be easier. Some dimensions on the plans were a bit confusing to me. So rather than invite a machining error on what is a time-consuming part, I tried to match features to fixtures or jigs at the same time.
I already had developed some prior section views checking for an issue to beware of on radials. That none of rod elements intersect with anything, in particular the link rods with the skirts of cylinder liners. I’ve read about some builds requiring unwelcome notches having to be cut late in the game. Because it’s kind of a 3D problem related to rod length, stroke length & part dimensions rotating & displacing, it may not be easy to visualize. Handy hint if you don’t have a means to detect interference. Do a lateral cross section at the face of the rod section, not through the center (which may falsely show sufficient clearance). It’s usually the corner of the link rod that will contact the bore at first at some angle. In my case, I had to pay attention to the liner bottom chamfer as well as the corner chamfer/radius on the link rods.