Low oil pressure?

no sorry
it takes about a 3/32 x3/32 square channel to equal a 5/6 round hole cut in the saddle from the oil feed to the parting line- 1/8 works
round the intersections
then drill the bearing halves into where the rectangular oil resouvior / spreader is
oiling the mains at the top looses lots of oil
you can put a hole wherever best to oil rods
Is this what you are trying to describe. Also here's a pic of a block that has a the counter bores. Does your block have these?

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