Is it normal to have a major difference in temperature from the firebox side to the other side???? I have an Horizon 16" offset smoker with the convection plate. I'm using an Maverick ET-733 with both probes at grate level. I tried moving the convection plate right up to the firebox and also moving the Plat 2-3" away from the firebox. Any tip or comments would be helpful to this newbie smoker