Rossi used the oil hole through the pin for about 3 years from around 83-86, Unlike OS which didnt have any oil holes in the rod on the VZB the Rossi rod had 3 oil holes as well as the diagonal hole in the pin. Their rod had one hole through the face of the rod above the big end as rods do today and they had two more holes through the side of the rods big end.Regards Martin.