How long did you let the candles cure for?
What percentage oil did you use per pound? Are you using the max?
What are the names of the scents that you have put in your wax and from where?
Have you tested using those same scents?
Are you using more than 6 or 7% oil per pound of wax?
I had much better results using cd's as I found eco's burned very hot and I had more sooting than anything, so that is what I use for 464.
Withe 464 I have had to drop some oils and move onto another. You might have to do this. When you mentioned you tested, did you do in the jars you mentioned?
Trappeur