If only there were an equation that would explain it all. Preferably one found on the production rules page, under the retooling section. It would probably be something like retool = Ln(Volume Capacity / 7750).
Yeah I was always under the impression the Rules page on that was accurate and retooling time was based on the volume capacity of the production facility/station. Factory and Labs are small, Then a SY1, Naval Shipyard, Factory space station, SY2, SY3 and finally SY 4
Did I miss any?