That's a good question Bill. I would say likely a lot more than we hear about as most of these threads go unresolved or people are reluctant to admit any fault and blame the cam and/or lifters. Typically there is a root cause and yes sometimes lifters and cams can have issues, but I think that number is skewed a bit when it comes to the internet.
You're one of the few that actually posted other issues with the engine that were likely the cause and I thank you for being honest.
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