I'll look at things tonight. Kind of stuck dealing with other projects right now. Actually, I had intended to get calls at this level at the close, but I was out and not able to get up on what went down this afternoon. A quick look says an A=C drop from the AM highs would take us to around 1639-1640, although the 1646 low could be it if it is a significant level of support.
Like I said, I'll have to look at things tonight.