Don
Spot on! They are the locating pins.
I am a little worried that the engineering shop may have over machined the connecting rod. The big end seems a bit stiff. Otherwise, so far so good. I may complete assembly in the next few evenings. One challenge is setting the timing since I do not have a dial gauge and it requires .080 BTDC.
Any tools bought at my age (nearly 66) may not give full value! On the other hand, a good as new, overhauled Tecumseh in the 56 will probably now outlive me!