I believe those rockers have feed holes to the roller wheels as well as the pushrods?
And there’s a groove in the center of the rocker body?
Does the oil feed hole to the rollers intersect that groove?
It’s a path of least resistance situation.
Imo, the pushrod oiling is the top priority, so the feed hole for that should intersect the groove, but the feed hole to the roller should not.
For example, the “real” HS rockers don’t have any feed holes other than to the pushrods.
The “valve side” of the rocker arm is oiled through splash and oil mist.
As for other leaks.......
Ideally no oil would be coming from anywhere except the pushrod feed holes, and then barely a trickle to the rollers(if that side of the rocker even had a feed hole).
Any oil leaking around the area between the stands and the shafts is oil that would be better off going somewhere else.
Those parts are all just metal to metal contact, so there’s often some leakage..... but excessive leakage can be a problem.
And it goes without saying...... the higher the spring load, the more oil the pushrods need.
So, what you have there might be fine for a 484 cam with a single spring, but isn’t cutting it for a .600+ lift with 500lbs+ open load.
