Ok Im using IGI6006 and a hex 9oz jar. I was having a problem with sink holes so I tried slower cooling by placing the jars in the oven. They came out good but still had a dip. So Im guessing the only way to get a smooth surface is a 2nd pour or heat gun. If Im gonna do a 2nd pour how far should I fill the first time on this jar oh and how long do I wait untill the 2nd pour an 1hr or so?