Yes, you are correct. There needs to be an oil line between points A and B. It needs to clear the push rods so it will have a slight outward curve to it in the area where the side plate has a bulge.I'm not sure any aftermarket suppliers sell these, but it is not hard to make at all. I don't remember the sizes, but I'll check my parts later and post them for you if someone else doesn't respond to your question.
