Why don't my roof panels line up?
It may be that something isn't quite sitting square in the building.
Check that the building isn't twisted by lifting two opposite corners of the building to straighten it out. This should bring the roof panels into alignment for you to nail into position.
If this does not resolve the issue, check the positioning of the roof supports and send us an email with photographs of the roof panels and the issue you are having to firstname.lastname@example.org.