Okay, maybe this will read better: "I've seen FOUR differnet shops in different areas of the country report 270-ish out of these heads, including the guy we got the heads from. But the only way we got 273, was a slight de-shrouding of the chamber and a quick guide trimming...AND without the plug. There must be something wrong with our bench, as it doesn't agree with anyone else's".
I'm done. Sorry if I offened anyone, that wasn't the case. I wasn't IMPLYING anything about anyone. I just come here to share info and learn, not stir up ****, but sometimes I guess that's not possible.