I purchased the following kit: 3F3871221M
It is for a 99 Nissan NS70C
I dismantled the carbs today, and I've got a place for every part in my kit except for these small black stopper/plugs. They are not much larger than a pencil lead.
The part in question is on the far right. It is not the plug that covers the low-speed orifice. It's much smaller.
Thanks in advance,