My favorite was everybody saying they need to be checked and when I called around to shops that did heads they said they wish they could sell brand new heads and say you better have them checked out LOL...
It turns out when I did have them checked out the guy said the lubricant had dried up a little bit and he really lubricated the valves for initial startup but also indicated that it probably wouldn't have caused me any trouble...
But since he had them apart and was in there...