Excellent and durable cover, and is the second of these covers I have bought and assembled. A few suggestions
1. Follow the directions in order!!!
2. Have a build party with at least two helpers, a 3rd would be optimum.  The roof sub structure involves some pulling and tugging to align, so more bodies are key here!
3.  The clips on the roof tiles face the sky... the pictures leave a little to be desired.
4. Have an awl handy to line up the holes and make the bolts easier to install (and not have the peices slide outta alignment while reaching for parts)