The canopy will NOT slide.  When you grab the handle in the middle to slide the canopy open and shut the outer ends bend and buckle.  We actually have to grab a broom and go back and forth to the outer ends to help it catch up to the middle.  I chatted with 2 different Wayfair representatives to resolve the issue (one completely disappeared after offering me a 20 percent discount and the other referred me to the manufacture of the pergola.) The  manufacture wants me to video the problem (troubleshoot for them) we don't have enough people living here to actually slide the canopy  and video tape.  I am beyond disappointed