Carby fun

Just finished reassembling the carby after cleaning it all out and leaving it to soak in kerosene for a night. Had to use a compressed air blower to clean out the fuel intake! Gummed up good that bit was... the rest looked OK. Oh and the soak freed up the throttle which was good, it was nice and stuck before. Did you know that kero is the main ingredient in WD40 (AFAIK) ?
Anyway the carb looks okayish, the status report:
The pin that connects to the float to stop fuel coming in when it's full is broken a bit, may need replacing. There looks to be something that screws in missing from the top left of the photo, and there is another what looks to be a fuel line connector (just right of the missing bit, aiming rightwards), but i'm not sure what it's there for.