I got some liquid Sucralose sweetener from a vendor to sweeten my ejuice. I put one drop to 2ml of peach ejuice. It tasted slightly smoother but not much sweeter. So I put one more but not better and than another drop but than it tasted kind of sour/chemical. I was hoping to make my ejuice really sweet when I get that sweet tooth but it just don't work for me. What's the problem?