Good quality product and good instructions.  As a member of the "half century club" I was able to assemble the pergola in about 1-1/2 days without any help, however, had to be creative on how to hold the components in place until they were connected.  Since the pergola was installed next to my garage I just had to do some temporary rigging.  A few holes did not line up exactly but that is to be expected unless you are assembling the structure on a perfectly level surface.