Were so sorry that your having issues with the tarts and hope this simple tip may help you some. Not saying to buy a new wax or FO or anything, but try to increase your FO to 1.5 ounces to each pound of wax? This is what we use for all our candles, tarts, tea lights, votives, pillars, etc and seems to work extremely well =) The debate over the "best wax for xxxx" is different for every single person, so personally, it's what YOU like, not what others like.... but the 1.5 ounces should give your tarts a better throw and make it stronger. Being your not "burning" the tarts with a wick, no worries if you go over on the FO a bit =) Best of luck to you and hope you have some success soon =)