The BILT assembly app was a huge help, more detailed than the manual.  Had to have a split board replaced.  This was done without question or hesitation.  Parts were well labeled, thankfully, because the assembly process is long, but not overly complicated (if you pay attention to part orientation when instructed to do so).  The kids enjoy it, especially the lower area we converted to a sandbox.  The real test is time, info we simply don't have yet.