Sorry, do you mean the driver side / left side.
IIRC, the MP engines book does not say to block the oil feed or use a Allen head set screw to block oil on the right / passenger side. That valley still feeds the front main and rods, IIRC
The crossover tube is for Hyd. lifters, roller or not.
Correct?
The main and con rods. Isn’t being feed from the passenger side?