Matt
I am sure you fixed it by now. Just pull the rear end out and tear it down very straightforward....

Our gas now has around 10-15% ethanol mixed in with it. The ethanol draws moisture fast. It will cause phase separation. Do a search on it it is amazing. You do not get as good of fuel economy with the ethanol fuel either....   

Everybody needs to remember we have the ethanol in gas now. If it sets more than few weeks it will phase separate, leaving water on the bottom then alchohol. You really have a problem in boats now..