I am personally just amazed that someone is that keen to follow the rules so scrupulously.

Since neither Hobbs or Tach time are required to be recorded in the first place, it's on the honor system and always has been. Egregious fudging is not in the best interest of the pilot/owner of the aircraft, so it's not very common. This is why log books are so valuable when buying or selling an aircraft or engine...without them any claims of the amount of service rise to the level of rumor.

Frank "What number is the big hand on?" Giger