I finally was able to get a picture posted. Not sure if it's too late or not. What's not visible in the picture is a third drain behind the skimmer. This is where 100% of one of the overflows dumps into. The other overflow goes into the "Y" setup that you see in the picture.
Another person also mentioned to me that there could be something spawning in the tank that would cause the skimmer to overflow.
http://www.tarno.net/gallery2/main.p...12161.jpg.html