I normally don't write reviews as it is only my view on something, but this set is horrible how Lego emplamented it. First I will say it was a fun build, but I could see the problems right from the get go. The frames only being 1 stud wide simply doesn't have the clutch power to hold the frames together. Every time I remove the maze surface and install it the inner frame falls apart. This I would consider a medium flaw. Now the fatle flaw, the tilt. The inner frame only tilts 2 degrees yes 2 towards the yellow side of the set. That is simply not aceptable to me. JWBricks does have a fix for this, but that takes away from the structure of the set without buying more parts. I will be contacting LEGO to see if they will send me the needed parts to fix this set. Overall if you on the fence about this set I would wait. I have a felling this set will be recalled just like the Wall-e set was and a fix issued, well I hope anyway.