WHAT do you do?

BTW
If inspecting heads, …..
How would one find a valve spring that is going to break?
Obviously a gouge or nick in the spring, or one that is not rated or set up correctly for the cam. Or Doesn’t stand straight. Anything else?
From what I understand, these stock beehives are at the limit with the stock cam. - what I was running.

I have about a dozen projects going on. But general information is good and about applies to everything.