I have made two batches of candles in the last 2 days and both of them have developed a very small crack all the way around the candle. I thought that it might be the pour temperature based on some searches I did. The first one I did, I poured at 130 degrees and the second time at 106 degrees. Both developed the same crack. I didn't move them after pouring, which can cause cracks. I did not warm the containers (first one being tin and the second glass). Any suggestions. I'd like to be able to give these candles as gifts or sell them, but I can't until I get rid of the cracking issue.