Craig...exactly.

( thought you may comment on that

)
But at that time engineers were waving their fingers in the air and insisting on three blades. It took Scotty to convince them the errors of their ways.
It just confirms my thoughts about the whole process.
To give more respect to what the hot rod fellas have done with their standard...have a look at how they want the drag links on Jag suspensions.
They..and many Cobra manufacturers, used to have parallel trailing arms for Jag suspensions. Now their standard insists on converging arms in line with the bottom swing arm pivot of the suspension.
They found a binding issue with the parallel arms so they changed it.
Takes some1 of scotties talents to get rid of that binding.
Cheers