Coolant leak from head bolt?

Further update... tried the permatex thread sealant on that x-manifold stud and it made no difference. Guess I need to pull the head to get to the bottom of what's leaking - the helicoil or the head gasket. Since it's a small leak I will probably keep driving through the fall, then pull it this winter. Or maybe that's the excuse I need to swap in the 340 I'm building!