1978 Honda cx500 stored for the winter started yesterday and major gas leak through drain hose.?

Adjust the float in the bottom of the carb.It is a trial and error adjustment, bend the tab for the pin little by little.do not mess with float height if was running ok before storing up sticky float or muck in carb are causesCheck to see if the screw on bottom of carb to drain the carb was left open from last fall's winterizing!