Just my 2 cents on this topic. 2 oz of FO per pound is really unnecessary. Most of us, myself included, stick to the 1 oz per pound rule primarily because it's cost effective. If I can't get great throw from 1 oz per pound, I'm pitching that fragrance and trying something else. As OldGlory mentioned in an earlier response, some fragrances are just softer, no matter what you do they will still be soft. The Grace fragrances from Philosophy (Pure Grace, Baby Grace etc) come to mind. They are just naturally subdued, light smells. My personal blend of wax is 50/50 soy and paraffin that I blend myself. I have some tarts that last almost a week (Berry Bewitching Brew from NG!) on a hot plate warmer. While some start off gang busters but mellow out for the rest of their melt.