I am well into restoring this 27 O'Day and I am ready to start on the head. It is currently a mess with much of it jury rigged from the previous owner. I want to put it back to original. Does anyone have or know where I might get a diagram of how it should be setup for both direct pump out and holding tank pump out. I have the intakes and outlets and holding tank, vent, the pump is burned out but it looks like everything is there. It just doesn't make sense how it was rigged. All help is welcome.