I might be hitting them hard. Not sure. The C seems like a strange one though. I doubt if I’m hitting that one too often, or resting on it. But it must be something like that.
So nothing to do about it I guess?
With my current MBP late 2013, Apple replaced the keyboard for me just before AppleCare ran out because so many keys had become unreadable. Then I replaced this one myself last year when the battery went crazy.