I recently switched from IGI 6006 to Coconut Apricot Wax and initial wick testing was great. Glass jars, 3" diameter, used mostly LX 16. Issue is last batch of wax, purchased around the first of the year has been very problematic and wicks are either tunneling or leaving behind a lot of residue. Testing CD 8 & 10 currently but experiencing similar issues. Anyone else had this experience? Positive initial testing and than random issues for no apparent reason? I've been making candles for over 9 years and I'm totally baffled. Thanks!