I have an old buck 2600 I believe but anyway I replaced the fan blade and motor this fall all new seals everywhere everything but the thermostats I think l the thermostat has gone out its stuck on high all the time but my biggest problem is that now the fan is making an awful grinding noise like metal on metal scrapping this all started this morning it was stuck on high for about 45 min even when the fire died down the the fan noise started just after its unplugged now but am I going to have to pull the fan what could have caused it to start making this awful noise do I need to replace it? Again? It's ran on high before with no problems I know I need a thermostat but I'd really like to run the blower till the new thermostat gets here it's my only heat source help please