Edelbrock heads

Any new head assembly gets checked before i run it. Do you "have to". No. But IMO, if you're spending $1500 on a set of heads, do you really want to not get everything they are capable of? In a production line, any production line, you get a range of quality. It's built into the business model. At one end of the scale is perfect, at the other is so bad it damages something when it fails. So many failures are also built into the business plan. It costs me another few hundred, but on a build where I'm spending $X thousands, a few hundred for insurance against "average" and "below average" just makes sense. Visually you cannot see the deficiencies until you try to bolt on the rockers and check the geometry. Otherwise it's pretty much all hidden until something fails.