Arp Head Bolts

Don't let it get to you Mike, This kind of stuff is a real pisser especially when you buy/take percausions against this and it happens anyway.

Do like you would with rod bolts, tighten in 3 steps, then loosen and retorque going 3-4lbs tighter on the last sequence=if 90lbs, go 93lbs.

And to the guy that said paint will loosen them up, That makes no sense, it's paint, it ain't withstanding 90lbs... especially uncured.

I do this all the time & NEVER had a head bolt come loose.