intake installation dilemma
I have never had any crankcase ventilation come out of an intake manifold bolt hole. In case you haven't heard of PCV valve. That means positive crankcase ventilation which means it would be sucking on those bolt holes for those bolts not blowing. Now I have seen plenty of engines with lots of blow by but as I said I've never seen a single one that was putting it out through an intake bolt. And I never put goop on my intake bolts. My bad. And yes I have taken bolts out and bolted brackets on and tighten them back down and never ever had a problem with a vacuum leak.
I don't use a torque wrench on intake manifold bolts either I have a clicker elbow. It lets me know just when to stop. I do use RTV around the water passages and then on the China wall corners for where the Heads Meet The Block.