Mods and COTBs still pump K into the system. Other than that, K will move around until everyone has the same, except for those who are hitting with gray, they're kind of stuck.
I'm away for the weekend and I'll return as a non-Plat and probably mostly keep myself to the training and science boards, although I'm sure I'll pop in from time to time. C&C is a bit drab as a non-Plat not being able to see sigs and having to click on pictures etc. It felt like a fresh board had been opened up when Jack gifted me that month's Plat.
I'll guess I'll be hanging onto my K for defensive purposes unless it gets stripped away.