Hmmmm,
I threw in my Polder thermometer that confirmed the indicated temperature, then I looked a little closer at the internal temp probe. Who would have thought that in only seven months of smoking I would have enough "seasoning" to totaly coat the internal temp sensor. A good scubbing later and my Amerique went to 265 in less than an hour so I will chalk this one up to "User Error".
Cookshack makes a great product and I should have known better!