Removed carb and disassembled:
It sure ain't a Mikuni. Circled adjustment is idle... I thought it was the mixture screw!
Adjustment in the square is what I believe is the mixture adjustment.
Something I noticed was the fuel in the bowl was pouring out the circled port when I removed the carb - is this normal, a breather hole or something?
The needle. It is adjusted for the center position, which I left alone.
I forgot to take a picture when I disassembled the bowl on the bottom. I see what I think are two removable jets down there. I wrote the numbers down, damned if I can find them now - center one was 94, the other was 33? (found it - 94 and 38 )
Regardless - I don't see anything wrong with the carb, nothing gunked up or sticking, everything moves freely. Bowl screws weren't that tight, nothing major.