273 adjustable rockers on 360, very little oil to springs

I'm experiencing the exact same thing. I've put a couple hundred miles on them and everything seems fine. Just very little oil.
I have the 273 rockers on my 340, been on there for over 40 yrs. While there is maybe not as much oil flinging around as stamped rockers, there is plenty of oil coming out, and there has never been a problem.