The procedure in the link seems to be sealing off the bowl vent connection between the float bowl and the air horn, then rerouting it externally. Eliminating this feature will make the carb susceptable to air fuel ratio changes as the air filter gets dirty. The internal bowl vent keeps the air pressure above the fuel the same as that in the air horn, which won't vary as a ratio when the air filter gets plugged a bit. The equal pressure keeps the jets feeding fuel at the same relative rate regardless the filter restriction.

A better solution may be to find a way to raise the vent inside the air horn.

Anyone ever able to get a 32/36 Weber to fit the stock air cleaner housing?