7 lbs. turkey breast in the MES running between 225-250. Put it in around 9:30 this morning , 6.5 hours ago. Checked therms and they are accurate, probed in a few different places.m did everything I should. It's not the smoker temp or the therms. Stupid plastic pop up timer popped put about 20 minutes ago. Cut a little slice. Looks white all the way through. Not sure what to do. IT was 153, now it backed up to 149. No idea what's going on.