Third prototype is done -- specs coming in between the first two prototypes. The box model graph is essentially identical to the original. Hopefully I have reached the perfect balance of mechanical durability and response -- should have it after new year some time in my hands
Gray is the first prototype I published spec on which was a bit too soft.
Yellow is the 2nd prototype that was way too stiff.
Green is the 3rd prototype that I hope achieves the best balance.