I don't even know if I care to fix it at this point, but I'd like to see if anyone has had similar experiences or if I'm doing something obviously wrong. My jeep came with headers on it, and I wanted to go back to stock. Got some used manifolds, threw them on and they had a ticking noise under load. I had installed them using the torque sequence described on the paper that came with the new gaskets to factory torque numbers. Figured I would get the manifolds checked out since they were used. I took them back off and drove an hour round trip to drop it off at a machine shop, then did another round a week later to get it and ended up paying $100 for milling and to fix a broken stud. I put them back on, this time using the service manuals torque sequence, and it was music to my ears! I did a couple short drives, and retorqued things a couple times. Well here I am now about 40 miles later, back at square one with a loud ticking noise under load again Warped cylinder head or warped human head? Always something on this project... Edit: forgot to say, this is on a 258!