I gave the brass insert a couple whacks with a wood block protecting
but it wouldn't budge. My brass insert wasn't twisted as well as out of
alignment, so I decided just to drill it. I used a # 44 drill, which is .085
or 2.2 mm....anything close to that will work. The drill did drift slightly
into the aluminum as I drilled the brass, and I did hit the threads a bit.

I figured this would happen, but it's OK....and I lock-tited the nipple back
in, and I don't anticipate any problem. I forgot to look at the inside of
the fuel nipple itself for any restrictions or problems. However, I gave it
the "blow test" with the fuel line....again with the barrel all the way open,
and manipulating the needle from fully closed to fully open (about 5-6 turns)
the flow seemed to be much improved, and linear.

The good, the bad, and the ugly:

1. Double o-rings on the needle...good
2. See the scroring in the barrel ? (not the throttle sleeve)....bad
3. In the fully closed position, the barrel guide slot is exposed....bad
(this could be one of those "engine won't shut off problems" ? )
4. See how the mounting flange on the carb is "knarled" ? ....bad
I wonder if the carb pinch bolt was out of alighnment os something ?
I don't recall if the carb was off the engine when I originally got it.