I did not want to waste time,so with the help of mary,i ordered all four parts we thought it would be. i then used the new parts,omhing them and then the existing. turned out to be one of the gas valve coils. Mary was a great help,very knowledgeable.the local brick andmorder wanted six times what you charged. i will never shop local ever again. i have you in my favorites now and will call you first and only...very fast shipping, thank you rick