and yes these new Arp bolts were loosening up some bollts as much as a 1/4 turn on the torque wrench before I disassembled the 273. still have NOT found the smoking gun yet.
Are you using a clicker torque wrench? Having always used stock bolts and never had your problem using standard Felpro gaskets and info from "Perfacar", I'm thinking stock bolts are just fine. Your experience is very hard to get a handle on. Seems like you are doing everything right...