Congratulations of designing and manufacturing this outstanding product. As a licensed contractor for 30 years I rarely see a product that would make me spend the time to write a review. The instructions were thorough and easy to follow, I read the 90 page booklet the evening before assembly. The components are well machined and precise. Every screw went into the preformed extruded pilot hole to ensure a  problem free assembly. I work alone  and  installed the shed in 8 hours on a sand and paver base that I installed the day before. As noted in the instructions a level base is extremely important.  I was amazed at the strenght of the completed assembly. My customer was completely satisfied with the installation and I honestly cannot list a single con about the product . Well done  Lifetime.