Crin, are you aware that there are several different shackle bolts with different internal oil passages depending on year, model and position? It' all in the master parts list, and all models that use these pins use the Bijur lubrication system.
Here's a chart of the various pins and positioning for the Eights and Super 8s that I made up years ago, you might identify which exact one of these pins you are offering. I never got around to completing the chart for the Twelves.