I am glad to hear that, though not that you have to do it. But the leak looks to be coming from the back coolant hole past the used gasket.
The problem with the sequence of assembly is that the intake has to settle downward against both heads as it sets in. In the sequence done here, if the head bolts are torqued and the head locked in place and then the intake bolts tightened, they can't 'pull' the head upwards to seal the intake gasket. There might be some magic sequence of torquing the head bolts just a bit, and then torquing the intake bolts, and then going back to the head bolts, but getting that right is iffy.
