all of the suddern it stopped working, so i turn it ups and downs to figure what the problem was, and finally i came across that the blade attachment was broken. now, it has been a while since i search for that specific part but no luck. so would you please help me finding the part? the other question is that knowing the fact most of your customers who own the same blender faced the same broblem, but you never attempt to put much thought into that and make a little change.