My first use of the AMNPS was a short smoke. Just one row. Worked flawlessly. I placed the AMNPS on top of the two rails at the bottom, just left of the element and chip tray. I pulled the chip loader out and the row burned as advertise. This last weekend I smoked a beef brisket which needed to go longer. I setup for 2 1/2 rows. Well the first row went fine. I noticed more smoke and then checked. The entire second row was smoking. I suspect the extended heat as the problem. I was set for 225. How would you get 8-11hrs with the AMNPS ? I read about a possible heat shield. How big would I need to build one ? Location ?
Would placing the AMNPS on the drip tray help ? Very little greased on my drip tray.