340 Oil Priming Question First Start

Those shafts look like they are from a stamped steel set up. You can tell by the large oiling holes. Adjustable 273 rockers have 2 oiling holes per rocker on the shaft. One near the loaded side of the rocker base (Should have a banana groove, but they all don't) and one to feed the rocker adjuster with a dribble amount of oil as the rocker moves up and down (timed exposure).
Maybe I read this incorrectly. Are you saying that the shaft is not the correct one for the 273 rockers?
The rockers do have two holes indeed. Not sure about any banana grooves?