I shot a batch tonight the temp was about 365F and it started to yellow after the first three shot. I have not had this much problems with the other plastics i have used. Whats crazy is the first two shots were clear and i started to notice it turning on the third shot. What i am calling a shot is i shoot 2 molds at a time. I fixed this batch with green char color and shot the last 2 shots green. Cub48