Got it. I guess I was under the impression you were combining the two to make your tarts. That's why you test to find out. It isn't necessarily that more FO makes something stronger, howIever, in the case of Sugar Cookie it is one that I had a problem with from several suppliers. Most of them actually burned so to speak and stayed on the bottom of the pot. This may just be a tough FO to find. I had better luck adding it slowly and warmed. If it is mixing fine halfway through adding it to the wax, then I suspect you're maxing the load the wax can take from that particular supplier for that particular FO or there's a problem with the FO you have. I would still call Morris and seek out their advice on your issue. Maybe they know something we don't. Because there are different grades of oils I expect and different suppliers supplying to the supplier you bought from. Different formulas. And in a few instances you don't know what the supplier you bought from does to their oils. Maybe it is cut, thus making it weak and it if was a weak fragrance to start with, then it becomes weaker. Another reason I mentioned Carol K, because someone else had said maybe the oils were cut and she came forth and said they weren't. I was just saying for anyone else reading that I happen to trust Carol's opinions on fragrances so I would believe that the oils weren't cut from the supplier you got this from. I don't have the oils nor the time to test out this supplier. Unfortunately you ran into a fragrance that is among a few that appear to be difficult for you to add to your waxes. Typically if I have to perform a circus act to get a fragrance to work after a handful of tries to get it to work, I will ditch the fragrance and strike that FO from the company (particularly if the supplier cannot help me suggestions on how to make it work since it apparently does for everyone else.) I hope there's a solution for you issue. 4794 has a good reputation as a votive and tart wax, but maybe it is just incompatible with the components that make up that particular fragrance oil.