If you are going to do any amount at all of bullet casting, I would reccommend you go to your local shooting supply store and buy a stick of bullet lube. It doesn't cost that much, and one stick will last forever. The lubing of the alignment grooves and pins is not just peculiar to LEE molds, but to all molds made of aluminum. I, like Marmot, found out the hard way that lubing LEE molds is something to do faithfully. You WILL get balls with fins if you fail to lube the mold. It becomes more pronounced during longer casting sessions, when the mold has a chance to get really hot over a long period of time. Buy the lube, use it, and have a much more enjoyable casting experience.