I know i shouldn't be attempting this with my 3rd smoke... but i am stubborn. Started the brisket at 4.30 am in my MES 40 at 225. 7.5 hours in to the smoke and the meet is already at 180. Have a second thermometer in the unit and the temp on the panel is off by 5-10 degrees. Any suggestions? It is definitely not tender. Thermometer did not go in easy so i know it is not tender, but jetf says to smoke to a temp of 190. Suggestions??