Didn’t realize anybody ever listened to K-Zit!
OK. I'm kidding. I actually live in northeast Columbia, and I have a few neighbors who listen to it once-in-awhile. I last heard it a couple weeks ago, and it sounded fine. However, it has occasionally had signal issues in the past. Its tower is closer to Mark Twain Lake than to Columbia, and it’s a little more subject to environmental conditions than the local stations.
I haven’t seen any STA's filed on the station. So, whatever you’re noticing is probably either normal or temporary.