Been using this unit for a month or so, And last smoke I notices the b ox was not getting up to temp, at least that is what the 733 says. Right now I am smoking some brats and I have both probes in the box and one says 223 and the other says 212. I believe the lower one is not accurate. Any ideas? Temped to send it back and pay a little more for the Tappecue Touch with two probes. Any input will help before I start wasting money