I have a Defiant Encore and the trapezoidal grate that lets ash fall into the pan is starting to warp. My stove is on an unheated porch in Maryland. Thinking perhaps the heat to cold is doing the bowing, as I watch the stove thermometer pretty closely and don’t run it past normal. Anyhow, I see I can buy a replacement for 100 bucks. Figure I’ll finish out the season and just swap that out. Anyone else have a warped grate?