OK, I’m quite the noob, too (but I've been an avid lurker and reader for 6 months now! and I slept at a Holiday Inn last night! ), but, someone please correct me if I’m wrong…Isn’t microcrystalline wax added to raise the MP of your wax? And the release of fragrance comes from the melt pool, right? So, if you raise the MP of your tart wax, it's possible your tart melter might not reach a high enough temp to fully melt your tart, depending on the type you use, and, therefore, your hot throw would be diminished. Is my reasoning correct? Hopefully, someone with more experience and knowledge will jump in here.