Ok, now that I own this machine it's time to figure some things out. I bought a 6' brush hog which the manufacturer said my tractor could handle and so far it seems to have plenty of power to run it. But...... The previous owner said the temp gauge didn't work. Turns out that it does and once I mow about 15-25 minutes it starts getting up there. Anyone have any idea what the normal operating temp shod be. I have also been blowing water out the overflow tube.at first I thought I may be overheating it but now I am not sure. Maybe I over filled the radiator? Maybe the cap is bad? Or maybe the thermostat is not opening the shutters? Any thoughts?