I had my wick and wax mix down to a science, and not realizing how much of a difference a new wax would make, And Needing to replenish stock, and having fun making candles, I made about 20 jars. Now testing a retesting, I see that my old wicks (rrd55) don't work with my new wax (ecosoy advanced CB). I have heard you cannot reuse a glass jar because of stress. I was wanting to melt them down and rewick. Can I reuse these jars or am I in serious trouble??