273 rocker arms

Are the any oiling mods necessary when using 273 adjustable rockers with hydraulic lifters?
A friend suggested by pre-loading the lifters the oiling hole is compromised?
A haiku:
What is that noise That clearly I hear
By gosh it's coming From my rocker gear!
I removed a valve cover It just can't be true
The rocker arms and push rods Have turned a weird color of blue...
Now I guess I'll be searching for new rocker gear
And the only guy I blame this on Is the one in the mirror...