I have a Kenmore side by side refrigerator freezer....a couple years ago all parts were replaced for ice maker, but even before it being worked on, when ice was being made/dropped into bin there were green particles along with ice that were coming through....what is it, and how can I stop it. Also it is very hard to clean bin. I have rinsed it several times with clear water, and no soap was ever used. Just clean, clear water.