LOL---I'd put the temp sensor where they have it now on the Gen #2.5, and I'd put the Hi Temp Safety Sensor right next to it, because if you have the Hi Temp Safety Sensor up higher, like in my Gen #1, if you did a dumb move & blocked the rack above the Temp Sensor, but below the Hi Temp Safety Sensor, you could have a problem. If the Temp sensor went wacky, the heat wouldn't get to the Safety sensor to shut it off.
From your experience, what would be the best spots for placing the temp sensor and the hi temp limit switch?
However No matter where you put it, if you block the air flow below the Temp Sensor, the Temp Sensor will cause the controls to keep calling for heat, and the heat would never shut off.
Soooooo---The Moral of the Story is------Never block air flow anywhere in your MES----Ever!!!
Bear