Originally Posted by Boso
What reason would a alignment shop not go to the exact specs if it could make that much difference I assumed that his equiptment told him where it needed to be they had the specs off the forum but you are saying they should be even closer than they are and no reason not to be
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The specs off this forum are not the specs an alignment shop would have since they are not the same as those specified by Ford. Ford's specs have a larger range and tolerance to the settings and THE Forum specs provide criteria on cross camber and caster settings. Thus the specs provided in the Forum are within the Ford tolerances so you would not be contrary to Ford.
Within a few miles I knew my 2012 was not right. However when I took it to an alignment shop they test drove it first and said what is your concern since it drives as good or better than most Ford based RVs they have worked on. We checked it and it was within Ford specs but I said there has to be a way to make it better. I worked with the tech and came up with some adjustments (didn't know about the Forum specs that came out later) which by some skill but mostly luck made a world of difference. Turns out the changes we made were similar to the Forum specs.
Long answer but that's why. The twin I beam suspension used is strong but was designed in the 50s and technology has improved. When Ford swaps over to the new transit style it should handle better and be less finicky. Ford is the only game in town for the big Class Cs so they have no reason to engineer the replacement and it's only for a few thousand sales.