I use 6006 and 9% FO, but I heat to 180, add FO around 170-172 and pour between 155-160. I know CS says to add FO at 185, but I'm always afraid the FO will burn off. Also, on one of the candle store sites I was on, they said to heat 6006 to 180, add FO between 160-170 and pour between 155-165 or about ten degrees higher than when you added your FO. It's so confusing b/c everyone does it so differently.