Therefore begs the question - do any of the "paints" we use have the level of controls you aspire to have? The house paint companies produce millions of gallons of the same paint (base) where the aircraft industry produces a few thousand. So if I pull out a can of simple, well proven, single part paint from a big box or buy a system of paints from an aircraft finishing company that has 3 or 4 different layers each with different thinners and catalysts all of which are subject to the painter's whim in mixing, equipment use, temperature, humidity..... they both have the same variability?