49 geezer,
I think there are only two methods for getting oil to the rocker assembly on these engines, and neither one involves the style of lifter.
Your engine receives pressurized oil from a tap on the rear cam bearing, through the little tube, up through the head into the center oiler.
You indicated you were getting oil out of the rocker arms...so it seems to be working properly.
Do you think you have a problems with the rocker arms?
Stuart
