1987 318 Tuning with Summit Carb

Sarguy,
Did you read post #46. I pointed out the Idle Feed Restrictions [ idle fuel jets ]. They are a fuel jet [ not an air bleed ] because it is immersed in the fuel in the fuel bowl. As I also said earlier, the 046 could be a misprint, which is why numbered drills are reqd to properly test the orifice size.

The two jets circled in red are probably the main air bleed or idle bleed. Do you have a drawing that shows what they are? No mention of them in the spec chart in post #25. It is also possible that they are the economizer jets, which controls off idle & low speed cruise calibration. Often in the 0.042-0.060" range.