Each of the side rails has two holes drilled in them that seem to match the gantry towers. You would think these holes would be drilled in the center of the side rails, but they are not. They seem to be off by about 1/16". I wonder if this will affect the tower positioning.
The manual (and assembly instructions) both say only the bottom rail should have a single hole in the side. Why do we have two holes in both top and bottom?