360 Intake manifold bolt misfit

Are there clearance holes in the intake for the pins that hold the cork gaskets in the intake valley???? If not, you either have to remove the pins or drill clearance holes in the intake so it will seat properly... I had the same issue recently with an LD4B on a 318....

Bolt length should be 1 1/2"....

Have the bolt holes been chased with a tap to be sure the threads are clean and true????