Started smoking a choice 12lb whole brisket at 4am I'm my MES. Woke up a couple of times to add wood and to my surprise the internal temp is already at 170 just three hours in! Coming temp was set at 225. I pulled it and now have foiled it and set the temp back to 210 just to slow things down a little. This is my first whole packer and am nervous that it's cooking way too fast. Thoughts??