My jeep engine was rebuilt several years ago (5000 to 8000 miles ago) by local machine shop.
I had valve covers off recently and just now noticed one rocker arm out of 16 has NO oil hole thru it.
Looking at receipts, it looks like it is sealed power rockers part # R875 were used.

Question:
Surely they are all supposed to have oil holes, correct?
If so, has damage likely resulted?
it's toward the back left/passenger side.
is there a chance this was done on purpose to improve oiling elsewhere?
(I am NOT an experienced engine builder obviously).

Do I need to replace both rockers and both push rods on that cylinder?