Thanks SR,
Thats what I was thinking since I did drill into both vertical passages at #4 cam bearing for full time oiling then I could not block off the lifter galley with the cup plug.
I am using solid roller lifters with presasurized oil to the axel.
Anymore Thoughts.

I guess the next build I will drill into one side only and add a crossover line from one vertical passage to the other.

I did see someone post a pick of their set up where they ran external lines to the back of each head and I guess drilled into the rocker shaft pedestal from outside the head. That looked chancey to me.