273 mech rocker problem

One other thing I noticed that hasn't been mentioned. Look at the tip of the rocker arm, in post #1, the contact patch area of the arm where it contacts the valve tip. Now look at the same area on the rocker in post #3 by @toolmanmike and compare how much more area there is at the tip of that rocker. It appears that the one in post #1 has been machined off quite a bit.