If the Finn mast builders can build masts accuratly to spec (and for a good price) why isn't it possible to expect the same from the Tornado mast builder?
Because science and engineering is never that simple.
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Now start adding the natural variations in other components like spreaders and diamond wires and the situation gets increasingly worse.
Each component added to a mast will add another cause for variations and deteriorates the dependability of the end result. Length quickly aggerates the overall effect (=amplifier), Tornado masts are part of the longest and most complex in the business, Finn masts are among the shortest and simplest. (Spreaders/no spreaders etc)
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