Overheating on run stand

Damn, I hate it when I am wrong. I misread the initial post. I thought Steve was saying that it ran OK the first time but overheated the second time with the thermostat. I was basing all my thoughts along that line.
Hey, who knows whose wrong or right? We're all just guessing, really. I do KNOW 30 degrees is too retarded for break in. That's why I recommended pulling in more timing. He could well have multiple issues. Hard to diagnose over the internet.