<snip>
I assume this means that the head hung up on something and didn't seat
properly.
<snip>

Make sure that there's no glue on the stud's threads or inside the
capnuts when you start to torque them down.  It can cause a hydraulic
lock and give false torque readings.  Only apply the glue to the flat
surface of the capnut where it meets the head.

Also ... you should "chase" the threads on the studs and in the capnuts
with a tap and die so the capnuts will spin down on the studs freely.

Mike