Rough-idling 360, can't figure it out!

Here is a comparison of a couple of cams where the lobes are starting to wear flat.

1970 318 cam on the right

1974 Stock 318 cam on the left

Cam on the right has 2 lobes that are definitely wearing down.

'74 cam on the left also has some lobes just starting to wear down, but no where near as bad as the '70 on the right.

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