Came here to do quoted repair on Vulcan. Griddle upon inspection, flue was totally clogged and needed to be cleaned out. Will order 4th from left thermostat per Bill. 4-13-17 Repaired gas flex-line and all burnt wiring. Tested unit, checked okay. Also had Chief Engineer check 4-24-17 Disassembled and replaced the 4th thermostat from the left. Reassembled and tested.