You have to make sure no oil on studs and head threads, otherwise nothing will work well.
Only the 2 outer nuts should've had enough drag torque to back those out, the rest should've spun right off,...only when corrosion sets in do the rest try to pull the studs.....or did You select lock/torque prevailing nuts for the rest..???....that'll do it.Installed new studs. Had to take the manifold off to install the right gasket..When I did, the studs came out. What did I do wrong? Thanks for the recommendations.