My problem is I have fuel spraying out of this screw. Said to be idle jet which is just a non adjustable screw with a tiny hole in it as illustrated:
I am devoting my attention to these as illustrated because I believe there is improper vacuum and/or the plugs aren't put in the right places. These orifices on the sides, what are they? The fuel spraying from the jet appears to be coming from the bowl via the orifice on the port side as it isn't plugged in any of three carbs as shown in picture # 3. As you can also see in images #1 and #2, those large holes on the side inside my indication are NOT plugged, should they be? Please, what are they called? My diagram doesn't show this at all.
I've edited the post about 20 times making it shorter and easier to understand. You're help is greatly appreciated.

I am devoting my attention to these as illustrated because I believe there is improper vacuum and/or the plugs aren't put in the right places. These orifices on the sides, what are they? The fuel spraying from the jet appears to be coming from the bowl via the orifice on the port side as it isn't plugged in any of three carbs as shown in picture # 3. As you can also see in images #1 and #2, those large holes on the side inside my indication are NOT plugged, should they be? Please, what are they called? My diagram doesn't show this at all.



I've edited the post about 20 times making it shorter and easier to understand. You're help is greatly appreciated.