I was and am disappointed in the Pergola. During winter one of the decorative pieces on top of one of the columns, sled down the columns.
Summary:
I wrote customer support about this problem and I was informed to either glue the piece in place or nail it into place so it would stay up at top of column. I sent a picture, also, of the problem column.
Summary:
This means I have to get someone to come back to try and fix your problem. I did not expect something so expensive to break so soon, a few months from when installed, to break. The other column did not have the same problem.