My bee-supplies got delivered in January (2015). However, I did not put the hive-body, two supers, and nuc hive together until February. In the weeks between arrival and assembly, I noted that indeed, as the manufacturer's had warned, a little warping had set in. Lesson #1 then: Always assemble your hives promptly.
By the time I got to the second super (the last of the "boxes"), I had finally got into the swing of things. Needless to say, it looks the best and probably is the tightest constructed as well.
The nuc, on the other, having arrived with it's own nails, is all set, minus a paint job.