AllenH, are you getting the 0.13 in the Atomizer Analyzer, or is it displaying that on-screen? Cold Ohms are only shown when in TC. Kanthal displays live Ohms. This is a cosmetic difference -- if it has the wrong one, it should switch over quickly. Unrelated to Ohm lock generally, but I did find a bug in Atomizer Analyzer's Override Ohms, by the way, and we are testing a fix for that now. Good find. Next time you leave it overnight, you could try logging refinement to see what it's getting. In Help->About, left click seven times on the Evolv logo. Then, go into Device Monitor. I'd log Sample Ohms, Sample Temp, Cold Ohms, and probably Board Temp and Pack Voltage for good measure. Have it Record to a CSV. Those should be able to tell you if the refinement is getting values that are at least consistent. Another thing you might want to look at is resistance stability. Try going into Atomizer Analyzer and screwing in your atomizer. I actually tested an atomizer at one point where too loose *and* too tight would cause poor contact, and resistance would even change significantly over a quarter turn. Was eye-opening. Atomizer Analyzer'll sample it while you do that so you can play around and see if that's an issue.