As per Comp

"All COMP Cams® valve lash settings are “hot” settings (intended to be set at normal engine operating temperature), but will work for initial start-up as well."

How I've always done it. I don't run it for an hour. Just put some heat in. Maybe 150, that's around where I come out of the lanes. Have to be organized so you don't take all afternoon to do it.

If the results don't match the theory, change the theory.