antifreeze coming from overflow tube

puddle coming from my overflow tube after bike has been stored for 2 weeks 2008 hayabusa.  had a bad radiater with a pin hole in it that was changed and was doing it before that.  After a 20 mile ride came back shut off bike antifreeze came porin out took back right then never leeked figures... he refilled the overflow tank,,, has been ok put bike away for 2 weeks went down in basement and a 3" puddle?????? so sick of this