Good Video but you did not remove main jet orifice which can be a problem on these carbs. It has a small o ring and small pilot size hoies. With main jet removed use a soft (golf tee) to push orifice out from top.

My 16010-102-305 kit came with a replacement plastic disc and spring washer for the fuel selector... did you have some leftover parts😄

i’ve got one of these

High Altitude Adjustment

knob is a high altitude adjustment. Mine says to pull out at 6000 ft