I also use GL's 70/30 and I don't have any problems with that much shrinkage. In fact, I don't have any shrinkage at all. Are you pouring them in a really cold room?? I know that I read on here one time to get rid of wet spots, some people put the candles in a refrigerator so that the wax will pull away from the sides??? Okay...what I would do next is call GL and ask them about your batch of wax. Maybe they can help. HTH, chantel