Well I got my boat out of mothballs over the weekend...cranked it up and overheat alarm is going off. I notice water that is usually squirting from the back of the outboard is not there. It picks up a little when throttle is applied...but only a slight trickle. So I looked closely at the water outlet and bits and pieces of ants are coming out...those big honkin' suckers that are red with the black behind. I have hooked up a hose to the hose inlet, but that only improved flow slightly and the alarm continues to wail. I am afraid they have built some nest who knows where inside my cooling system. How do I flush them out? Am I screwed?