Holley/Demon Carb stumble

First off thank everyone for the help.

Mattex
Is the "angle channel" #24.... right? If so, they are the same size on both blocks.
As well as the high or low hole were the IFR is NOT pressed in.
The IFR (pressed in brass insert) in the high/top is .061" esh the lower or bottom (3310) is .054" esh.
Is this right? do they need to be a larger size when there in the top compared to bottom..........or should the size be the same top or bottom.....?