I set mine cold, alot easier than working over a hot motor, and say your start on # 1 with the motor @ operating temp (HOT,) by the time you get to the last valve the motor has cooled considerably making for an uneven adjustment, unless you stop and start it back up warm up, etc.
A couple guys I know real well who used to work for Joe Lunati back when it was still Lunati used to do R/D on cams, experimenting with different grinds and so fourth, they actually cam up with the grind I run in my motor, orignally devoleped as a jet boat cam.
They now run their own engine shop/machine shop and dyno service in Southaven Ms, (Southern Performance)
They told me about 99% of solid cams can be set @.022 cold with very good results.
I have been running my solid roller @ .022 (cold) for 2 years now. I've only had to readjust once and then it was only one or two that were off.
I've never noticed any valve train noise but then I again I run open headers. :lol:
JMO, Cp