Yep,, got a leak somewhere. Check the float levels. Hook a clear hose to each drain cock running them up above the carbs, open the drain cocks and turn on the ignition to let the fuel pump fill the bowls. When the pump shuts off, if it does, then you can see the level of fuel in the bowls. If the pump keeps ticking, even occasionally over 3 o4 minutes you have a leak.