checked top Convection Oven unit, pilot lit but never proofed flame. spark kept sparking. pulled burner assembly and found pilot rusted and corroded. cleaned pilot hood and electrode. put back together and pilot lit was slow to proof flame and burners came on. unit is operational but requires parts. will obtain and return. 5/29/19 removed burner assembly and pilot, replaced pilot with new. put unit back together except front kick panel. turned unit on pilot lit and proofed flame main burner came on. unit heated to set point and cycled. unit operational. job complete.