I was trying to make soap crayons tonight, had my soap all measured to microwave. And I melted it using 30 second intervals, and it would get to the right consistency, but after just a few seconds of being out of the microwave it would go lumpy again? I reheated, but it was hard keeping it not lumpy going into the molds. Could the soap be old and that's why its doing this? I had to reheat this M&P like 4 times just to pour into 4- 2oz molds. Any help or suggestions would be greatly appreciated. TIA Sheri