The instructions are not in the right order, it is simpler to assemble in a different order. Like putting the vents on before putting up the roof 
Also, roof doesn't quite match up,(especially panels, might be from being stacked together with shipping and getting stretched out) making it very difficult to put on Trim, might consider assembling some on ground and "raising the roof)

The protective layer is difficult to remove.

So far it has taken 2 people 8 hours (16 man hours) to assemble, and trim pieces on roof, not done; difficult as ladder involved, and holes not matching up well, as well as doors to assemble) likely 24+ hours to assemble