Arrived at location on 10/1/21 - stated center two burners not lighting on griddle. Checked over. Pilot not lit, is not sparking. Inspected spark box, is in poor condition, did find a wire pulled off, tighten connection and reconnect wire. Turn on, now starts sparking. Hold on safety. Pilot lights right away. Main burners light. Unit is ok for use. Will obtain spark box and return. Returned to location on 10/14/21 - replaced the spark module I checked ops. Ok ready to use.