I bought this just before Thanksgiving after careful research I landed on this oven. When me and my family started using it we fell in love with it. Basically used it every day almost. Showed it off at Thanksgiving and Christmas. Convinced my parents and my sister to buy one. Then we started to feel as though the temperature inside the oven does not match what we set it too. It doesn’t get as hot anymore. I took out the guard that covers the fan in the back and cleaned it but really no improvement. my parents and sisters ovens do not have the guard over the fan. Should I just remove it? I wanna love it..!!