I have a gas 3 cyl 2600 and noticed fluid leaking from the radiator. I replaced the radiator, upper and lower hose. I also ordered a new thermostat figuring I would go ahead and replace it as well as the fan belt. It did not have a thermostat when I took off the housing and from reading these forums, I drilled a small hole in the flange and installed with the "cylinder" part of it facing the engine. I started the tractor and filled the radiator with the cap off until it started running out then put the cap on. The gauge always got into the red before but I want to make sure I am not overheating after this install. The temp light on the bottom right has recently not turned on when engaging the acc prior to starting every time. When I turned it off, both hoses and radiator were very hot to the touch. Any advice on the accuracy of the temp gauge or what I can do to verify this is OK? Thanks in advance for your help.