From your picture it looks like it is even all around and not binding on one side or the other. I have had this happen on occasion especially if the roof is cold. I move it back up a bit and then down again. Hold the down button a little longer after the light on the dash goes out and see if that helps.
Also, try lubricating the mechanism of the top and the clam shell. There are a lot of sliding and pivoting parts in there.
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