I noticed your careful calculations visually appear a little less than a 32nd inch off....I sure hope your FHM are forgiving!
Next time you are down this way, stop by and I will let you personally "adjust" them. I've got a charged up drill battery with your name on it and will pull the pallets out of the water for you.
I think the FHM will be more tolerant of my tolerances than you Rainman!