Hi Sherry, Yep I can agree the c3 really does seem to benefit from a longer cure time. I made some candles up and burned them after a weeks curing , wasn't too impressed with hot throw so put them away, then yesterday every time I walked past my cupboard I kept getting this wonderful smell, it was the c3 candles that I had put away and forgotten about. I had not thought of mixing the c3 and pb for tarts, I am having a hard time making a tart that lasts past 8 hours, would you kindly report back and let me know how long your tarts are lasting? Thanks x