my dynasty 48" oven/ broiler will not ignite. when the power is switched on and the common thermostat placed on a temperature or the broiler setting, both glow bars turn red but no ignition occurs. i replaced the oven gas valve with no change. since both the oven and the broiler quit working at the same time and the ignitors both glow i suspect the problem may be in the thermostat. any suggestions would be appreciated. also, any information regarding a source for dynasty replacement parts would be appreciated. thank you.