CTOM suggested over at another forum that swirling the plastic isn't an adequate enough and will leave hot/cold spots in the plastic. This makes since to me. I stirred the plastic with a spoon last night a couple of times but maybe I didn't stir it well enough when I did. I only started swirling the plastic when I found that it creates less bubbles. To counter this I will let the plastic sit for several minutes after stirring with a spoon. He also suggested that my reheats are probably too hot which I agree with. Thinking back on it my new plastic is probably too hot too. He gave me a few other pointers I am going to try today.