Why is it so hard to get good advice !!???

I changed the valvesprings and installed the pushrods, then the rocker arms. I set the lash to the specs listed on the card, but now that I think about it, the engine is cold. I'm sure the specs are probably for a "hot lash". Looking through the enclosed instructions, I didn't see anything mentioned about aluminum heads. It seems that would make some difference, right?