This is my first smoke and I have two 3.5 lb pork butts in at 225. It has been about 6.5 hours and the IT is reading 154. Its a brand new sensor (it appears to correlate with outside temperature this a.m.) I have no other thermometer at this time. Do I trust it or run to the store and grab a manual one and stick it in? Just a little concerned here. LOL Thanks