To get oil to the right side galley, you must use a priming tool with a disturbutor housing. If you look at the housing, you'll see that at the bottom the right side oil galley is part of the distributor. If the housing isn't used, it creates a large leak. Just take an old distributor, grind off the teeth of the gear, remove the mech. advance and grind the upper shaft to fit your drill. Instant primer.
By the way, if you look at a Chevrolet/GM distributor gear, there is a small drilled hole to the side of the gear next to the roll-pin hole. This hole is the index for the distributor rotor. For the ignition timming to be correct, this hole must line up with the rotor.