jQuery mouseleave function isn't being triggered when mouse moves quickly

I have a timeline with little pins on it which when hovered over, slide up or down and then display a caption. When the mouse leaves, the caption should disappear and the pin moves back. This works, but with the code I am using, if the mouse moves too quickly, it doesn't detect the mouse leave. How can I fix this?

P.S, the only reason I am using mouse enter/leave is because I think I needed to use live() as my elements are added dynamically after the document loads.

    $('#about-me .progress-bar .progress .notes li.personal').live('mouseenter',function(){
    $(this).animate({
        top:25
    }, 200, function(){
        $(this).find('.caption').stop(true, true).fadeIn(200);
    });     
}).live('mouseleave',function(){
    $(this).find('.caption').stop(true, true).delay(200).fadeOut(200,function(){
        $(this).parents('li').animate({
            top:30
        },200);         
    });
});