This has nothing to do with the box rule. This is the second 2012 North board with similar reported problem. Most likely bad or non-existent QA in production. I say "most likely bad QA" because if they say that 2mm misalignment of the fin boxes is within tolerance and they really mean it even inside the company, then QA might be passing boards as to be correct. However to me this would mean that their boards could be good only by accident rather by design. I mean the fin makers are sweating fine adjustments to foils, shapes, angles and surface finish to gain that extra edge and board maker says, 2mm more or less is perfectly OK (?)
Joke's on the customer, I guess.
Which means we better avoid current crop of North race boards as a plague.
BTW, I also have one, soooo
I did quick measurement and it looked OK, but will have to do more thorough check tonight.