I think that there was a problem with the thermostat, and the high limit thermostat. The temp's obviously exceeded the operating conditions in any mode. The fact that the L.R. element wouldn't shut down for 2-3 minutes is suspect as well. They would not design an oven that would let the temperatures get high enough to melt plastic in it and burn wiring.
Metal plate, or no metal plate, it shouldn't have done that.
I think you are good for the Warranty. JMHO.
Good luck.
Ozz
'07 3400RL 2nd RTU
2 Golf Cart batteries 1500 watt inverter
Honda 2000 Generator, 2nd one and twinning kit coming
Maytag's with 220 Dryer
Stationary domed Sat. dish
LCD 12 Volt Amp gauge
LCD Tank Monitor
3 added 120 volt outlets
On Board Air; 12 Volt Viair 450C compressor
2006 Ford PSD 4x4 Off Road Lariat
Hadley Air Horns
Truck inverter with 110 volts for laptop
Color Backup Camera
Awning lock
