I can't think of anything I do differently, I smoke the cavity, heat the mold and pour, usually not keeping the first few if they are not to my liking, I think you will have to stop now and then as the aluminum mold will heat up to where it need to cool a bit if I recall, I have only used one aluminum mold several years ago, so I'm going on memory here, I like to lay a towel in a paint roller pan and let the ball fall onto the towel and roll down to the lower part of the pan this keeps the balls from getting banged up when hot, may not be a must do, but it seems to work ok.