We have had this shed for two years, but wouldn't recommend it. We built a level base for the shed, and had no trouble with the assembly. However, the lid doesn't always slide easily - the lid slides easily only when it is warmed by direct sunlight. In shade or on cloudy/cooler days, the front part of the lid must be "lifted" over the back portion of the lid in order to be opened. The location where the two lid sections come together also leaks each time it rains or snows (even if the snow is cleaned off the shed roof). The back side of the lid slopes down towards the middle of the shed (sags in the middle), creating easy access for water. A wheelbarrow stored in the shed has had a couple inches of water in it after storms.