The picture below was taken at a bit of an angle, showing more of the profile of the apex of the cam lobes. Very little wear (generally indiscernible) has occurred on the base circle of any of the cam lobes, and only a small amount of wear on the flanks. But the apex of the last lobe on the right has taken a beating. By measurement, it has been worn down about 0.035 inch, and is obviously somewhat flattened on the tip. Compare this lobe to the third one on the far left, which is very close to the correct original profile.
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