Ok so i just picked up a used MES 30" for fairly cheap and it's in pretty great shape. Now i assume i know the answer to this but maybe not. So i threw it on tonight just to check how quickly the unit got up to temp, fairly quickly (about 25 minutes to get to 250. Now my problem is when i turned it on the digital control read 35F which i thought was strange. So i let it sit for about 15 minutes and it had only gotten up to 100F which i thought was really strange. So i took a meat thermo i had and stuck it in through the vent holes, and it read 175F. So, my question is, where is the thermostat located, can it be replaced or possibly need cleaning or something. Or do i just take the ~70 degree off of what i want the actual temperature to be?