Thank you for the replies @IDIBRONCO so it's safe to say the timing will need to be advanced some? Is this a difficult operation for a fair to moderately skilled wrencher like myself, Is there is a good thread on here with instructions or should I look somewhere else...? Do you agree that other electrical switch behind the FSS power-in is not the culprit? you said it was a timing advance? just sounds like it might cause a cold start issue if inactive ... not to disbelieve James previous comments but just trying to understand ... Thanks.