Like many of the other reviews I've read, ours came with dented corner posts as well.  fortunately, they were in spots that I could hide and did not have to go through the hassle of trying to get replacements.  The canopy and frame themselves are pretty straight forward to put up.  The directions said roughly 20 mins to do.  They must use canopy ninjas especially with that little useless tool that's included in the packaging.  Real time is about 2.5-3 hrs. with real tools and two people.  Once up, its very nice and spacious compared to the 10x10 we had.   If you have the space, go with the little bigger size, it makes all the difference in the world. I had put up lights and hanging plants, when my wife came home she said it looked like something out of a magazine.  That was all I needed!  My job here is done.