How much for 71 Thermoquad?

So there it is in post #103. Direct from Chrys. In black & white. Performance IS affected, but not seriously.
I have known this for a long time because I have run both carbs on different engines. The earlier design feels snappier on the primaries & pulls harder on the secondaries. The difference/improvement of the 71 over the 72 design was so noticeable on the secondaries that for many years now I have soldered up the holes in the 72 sec discharge tubes & cut off the bullet end off to mimic the 71 design.