Thermoquad mods that work.

Rumble.
No, have not enlarged those fuel supply passages. I see no flow restriction. For a couple of reasons. The passages are already much larger than the biggest n/seat you can fit [ 0.120" ].
The entry passage is huge & the branches to the left & right fuel bowls are at least 9/32" [ 0.280" ]. This fuel is delivered by pump pressure, not gravity, so I see no need to enlarge the passages.