I am new to smoking and have a MES 30 and also the Maverick 733. On the first smoke I put the first probe in the meat and the second on barbeque. It seemed to work great. Yesterday I cooked baby backs and tried the 2-2-1 method and really did not need to monitor the temp of the ribs so I placed both in the barbeque (not in the meat). I left the setting to be #1 for Meat and the other for bbq. I placed them on two differect grates. What I found interesting is that the temperature difference was extremely - in my opinion - sometimes 15-20 degrees between the two probes. Any thoughts?