Got my new MES on Wednesday but didn't have the time to season it till Saturday. Slipped my ChefAlarm through the vent to double check thermometer and set it for 275 degrees. I then went upstairs and heard the alarm going off, by the time I got downstairs the ChefAlarm was at 375 degrees and the MES was at 325 even though I had set it for 275. Quickly turned it off and opened the door for it to cool down. After it cooled down I tried it again but it kept wanting to go over the 275 I set it for, this time it went up to 300 b4 I shut it down. Of course being a Saturday there is no customer service at Masterbuilt. Any one else had this problem straight out of the box?