Proper procedure for re-torqueing head studs

[AL in NY]

nkaminar: anti-seize should NEVER be used if you are torquing to a prescribed value. The nut/bolt should be torqued dry to achieve the correct clamping force as denoted in the torque specification.
When retorquing you should ALWAYS back off the fastener 1/8 of a turn and re-torque to the recommended valve so the sticking friction does not figure into the final torque value.