I am pretty new to making candles and trying to "perfect" my results. Well, okay, trying to get better at it. I make exclusively 6.5 oz container candles -- glass jars. I am using what is sold as a one pour wax, and I am pouring at the recommended temperature (160 degrees). I am cooling as slowly as I can (I group the candles together and cover them with a box). I still get a concave candle. I have taken to saving some of the dyed, scented wax, re-heating it to the pour temperature, and topping the candle off -- filling the indentation (which can be pretty significant) back up with wax. I only get to work on these for a little while in the evenings, so the candles have sat for 22 hours before I do the second pour. Am I on the right track? Is there any danger in doing this?