After the taper was turned, I used a my gear cutting fixture to chuck one end, with the other in a center, and drilled the oil hole.
Fixing an error!
When I silver soldered the wrist pin bearing in place, it shifted, resulting in the hole alignment to be on an angle. I was forced to bore and ream it oversize, and use a larger wrist pin as well.
Some novel clamping was required to guarantee alignment this time. Some made-to-order spacers and an adjustable parallel were used.
