Unstoppable Coolant Leak

Charlesvolare said
I took the intake off and cleaned the gasket surfaces. I set it back on the heads and it will rest on the China walls before touching both heads, and I can get a little over .030" of clearance at both ends and the middle when it's butted up to the other head. I'll check it with clay tomorrow and see how that checks out.View attachment 1715372744

I would think that an even .030 gap would be taken up by the intake gaskets nicely.
I am no familiar with the magnum configuration.
Are the intake manifold bolt holes in the head blind or do they extend into the water jacket in the head?