My question, what would the CCT sound like just before it clicks to the next ratchet, noisy ?
Original poster, Cam Chain Tensioner, is automatic and will jump to the next ratchet some time.
The teeth on the tension adjuster plunger can become worn/damaged, which causes it to not function properly. You can remove it and inspect for damage. K5-K8 used the same adjuster but it received a significant redesign for K9. The redesign looks better but I don't think that it will retrofit into earlier models.