Your technician was interested in inspection than the tune up. Never said nothing about it. But he had plenty about the inspection and why I need to purchase a new unit because mine is cracked and it is dangerous. He had an obligation to shut it down and report it to authority. Which one? He never asked for the coupon I was told you needed not a receipt for the payment. Two weeks ago this scare tactics was used on her. It does not need to be this way. Never under estimate the power of the consumer.