I use C3 and agree with both above posters. That being said, I never have wetspots with C3 but I live in a very warm, dry climate. I do not prewarm the jars and I pour when a slight skin begins to form, around 125*. I also temper C3 and use USA which gives me a much smoother, creamier wax, no frosting, no 'bubbles', and great adhesion. hth