Fuel dripping from the carb means that the internal needle valve (diaphragm operated) does not close. Reason can be a dirty valve tip, or the lever is set too high. The rich idle mixture points in that direction. If the lever has a forked end, be sure the fork engages with the slot in the diaphragm boss. (same effect as lever too high).
Clean the valve tip and valve seat. Carfully! The rubber tip is easily damaged. A toothpick will do for the seat. Rotate with a bit of thick oil, so all debris will adhere to the pick.
Check the lever. It should be about horizontal the moment the valve lifts.
check the gaskets! The lever diaphragm must have the gasket next to the carb body, the pump flapper has the gasket next to the flapper cover.