I use the C3 all the time and have had that problem in the past. I also had problems with not all the dye blending in completely. I would poor my candles and the next day I would see the FO coming to the top and some times specs of die in the wax. I was able to cure it mostly by heating the wax to 180 before adding any thing especially the FO. I also stirr it alot right up to when i pour it. That seemed to get rid of most of the problems. Ocassionally I still get it but not as often. One strange thing i have seen is I don't get the FO bleeding problem right away. Some times I'll see it a couple weeks later. I think room temp has some thing to do with that and where I was storing them, near a heater vent.