After an accident with the main jar that came with the blender, I had to repurchase this jar to replace it. I grounded coffee beans and the plastic on the jar got all foggy and looks dirty no matter how much I wash this thing, I've tried everything and it won't just clear up. It's also getting worse. I wonder if its the quality of the jar because the first jar never did that, or on the previous machine that I owned back home. Also, something is going on with the lid, it won't fit properly to cover my jar and it gives a fight to get in there.