Looks like we are missing a part drawing.
I couldn't find anything that holds the Piston Rod to the Beam Links. On page 17 zone A2, "Cylinder Rod End Bushing " is shown that would make that connection, but can't find a drawing for it. The "Cross Head Link Bushing" (actually our item #33) (note that names are different on page 17 vs the rest of the pages) is what we need except shorter. I would suggest that each builder make their own. Same as #33 except instead the length of .808", it would have a length of .510" or more then face off the excess so that there is just a little overhang when assembling.