I bought a 30" MES last weekend and seasoned it. I found out my MES runs a little hot, about 25 degrees. Anyway, this morning I fired it up to the maximum of 275 and preheated to around 300..perfect. I opened the door to put the turkey in and of course lost a lot of heat, closed the door, and now I can't it to climb back up to 275???? The bird is acting like a giant heat sink. It has climbed to about 240 on MY Maverick chamber probe but that's all I can get. Is this normal? It will take forever at this rate. I was planning on a 5-6 hour smoke. Any suggestions??