Ouch! Pretty sure NOTHING goes in that hole, gaf1racer. That's just a circuit passageway for gas to get from main body to the bowl.
Your engine should have (3) main orifices #61D and (3) air idle orifices #27
The orifice in your picture does not belong in that location, or at least it's not shown on any parts list for your engine model number. How does the bottom bowl mating surface look? I would not think there is room for that orifice to be screwed in there.
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