Bob, the head mech at my dealer did not mention the story about the airlines vs. wrenches in use, but he did tell me that they would only retorque the head bolts and adjust the valves if a customer specifically requested it. Said it was not necessary to retorque the head bolts, and the valves would only need adjusting if they get noisy. He said to do my first service at 50 hours and change all the filters, check all fluid levels and a thorough lube and all would be good with him. I have about 34 hours on mine now and it has used no oil. Been bailing hay at three different pastures, so some roading and some working. I must say, the pavement travel seems to be unkind to the front lug tires!(4WD) The back ones hardly show any adverse effects. Chet