that you should check rocker shaft end-play at the bottom (between rocker and bearing cap) rather than the top of the rocker? The rocker floats on the shaft, so surely it shouldn't matter?.....
I ask this because I just checked mine at the top thinking it should make no difference (it was easier to measure the gap at the top), but all the how-to's seem to say check it at the bottom.
I ask this because I just checked mine at the top thinking it should make no difference (it was easier to measure the gap at the top), but all the how-to's seem to say check it at the bottom.

- well actually only on one rocker on one side (the exhaust on the left side measured slightly tighter at the bottom than the top) - the other rockers measured the same top and bottom. But the difference was there, so it'll be rocker bottoms for me from now on.