Understanding the ease of this task is reasonable. It makes alot of sense and is a factory approved method.

The other side is the one that errs on the side of caution. If this is a car you pamper, you will not want to ruin the cam sprocket and crankshaft timing gears by wearing them down with an elongated chain.
These gears were made to be replaced w/o removng the engine ,But i would never wish that upon anyone. By practicing (overly) preventive maintenance, you save yourself some effort in other ways.

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