After suffering some medical issues, I finally returned to the scene of the crime. I know that propane is in both tanks, but until i remove them, and weigh them, i really can not tell how much. I turned on the stove, oven, and everything worked OK, no propane smell after 4 hours with everything shut off. I know where i can borrow a gas detector ( the ones used by gas co ) to really check everything out. But first, i need to fill both propane tanks thus establishing a starting point. As the use to say about old cars, GET OUT AND GET UNDER. Thanks for all of the replies.