Storyline DropDown Menu Help

I've created a nice drop down menu following some of the best practices from this very forum; however, it is a little inconsistent as far as the state changes and the drop downs, i.e., the drop down does not always collapse when you mouse out of it. 

I am attaching the story file below. Any suggestions on how this can be polished up to work more like a seamless drop down menu woudl be appreciatted. 

Thanks in advance.

-Sam

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