@pkok Well, as a registered doctor of catology, which is not a science I just made up, I'd say you'll need to apply gentle, but steady pressure in a stroking motion to the resonant areas. I'm afraid your plan doesn't cover replacements, though.

@Surasanji the sound only increases! She stopped moving, except for the front paws, going in a somewhat anti-phase motion of opening and closing.

@pkok Yup. Sounds like terminal purrosis. You'll have to keep with the treatment, and move the kitty to your lap or otherwise shower affection onto it.

@Surasanji Oh my! Moving the kitty made it stop and activated the stubs-related movement mode.

I think it is fixed for now, but not sure if either of us is happy with this solution. I will try again to invoke the symptoms!

@pkok hehehe