[Gregski]

then you wipe off all the oil off the rocker tip only (so it don't wash away the ink) and tighten the rocker back on the valve and pushrod just so its snug (no extra quarter turn no extra 1/2 turn, etc.)

then you rotate the engine by hand at least once, and you watch the valve open and close ie go up and down

then you loosen the rocker arm and stare at the mark

in our case the test with the original pushrods looks good, looks right int he middle, though the factory stamped rockers don't exactly have a fine tip and are more forgiving so I think that explains the wide mark, (donno?)

DISCLAIMER: No the rocker did not fall off the valve, it was moved out of the way to show us the mark. Some of my buddies who saw the pic, were like all, hey oh no the rocker fell off, no...