I too just put together 5 of these, and everything went smoothly in the assembly after I figured out why one of the floor holes was out on each of the cabinets. When you put the bases on, three of the holes fit, but the last one is out about 1/4 inch. After fooling around for a bit I realized that if I placed the handle of the rubber mallet under the center of the base at the back and wedged (pivoted) it up to raise the center of the base the last hole would pop into the corner rods. When I did this the whole unit tightened up.