Ditto on Uncle Bob's observation on the trade slackers, jb. Sorry to hear, but the timing of the rain storm couldn't have been better for you, so much better than just after it was upholstered, and you were pulling soggy material out to dry.
So was it leaking at body seams, or gasketed joints? I recall that you did some extensive work early moving the entry door from right to left side, etc. And you mentioned Nigel saying it would be "....finished (waterproofed but not painted)...." Does this mean that he used something like a seam sealer on the outside that now has to be shot with color, all without messing up your signage? Just curious what you're having to deal with....