Valve train noise

I test fit the rockers on both heads.

The second head had just enough less space to where there was binding(fairly snug) with everything bolted down.

The bolts that come with the hold downs are too short to work on these heads IMO.
The is a touch over 1/2”(I measured .520) of space from the top of the heli-coil in the rocker stand, to the low point in the saddle.
The bolts protrude from the bottom of the shaft about .760....... leaveing about .240” of thread engagement....
which is less than the recommended minimum of being at least the same as bolt diameter(.312).

The holes in the stands are deep enough to accommodate 1/2” longer bolts(2.5” instead of 2”).
The bolt extended deeper into the stand adds some strength/stability to the stand.