How i fexed it. "Tip of idle fuel adjustment screw is broken off in the carb."

Ground the sharp end off a plastic push pin so it is flat .

Sand the wire down to just fit in the hole. "you will need to make sure that its the same size from tip to the plastic".  If its larger at the top it will enlarge the hole.

Holed the  plastic part of the push pin with needle nose pliers and hold over hole and squeeze the pin in with channel lock pliers. "If the plastic breaks holed the wire"