New Moto Guzzi Door Mats Available Now
One of the hoses under the tank is a drain for this area. The hose itself will not probably be blocked, but the spigot it is attached to most likely is.If it is like mine, you will need a drill to clear it, a bit of wire won't do it..
The tube up inside the tank is not a straight shot, but rather a coil like a very loose spring. You have to snake through that coil until the moat drains properly.