Thirdly, I called Edelbrock today. Seems their customer service is as good as the quality of their parts. Calling the main line, I get a woman who answers the phone "Edelbrock". I ask to speak to someone about defective parts and she says nothing, just puts me through to an automated dialing system. I punch some numbers and choose the closest option to what was given to me...tech support. Can't remember the guy's name but when I told him about the casting defect all I got was silence and then an "uh-huh". That's it. I commented about how it shouldn't have gotten through QC. Silence was the response. I go on to tell him about the other head with valve seat marks. He says it's a bare casting head and the valve seats need machined and that will all clean up. Makes sense to me, but I wanted to share here with people to get an honest opinion. Am I ok with the valve seats as best as can be seen from a pic?
Thanks everyone again for the feedback.