One of my SSKs didn't turn smoothly so i replaced them with the D3 ultrawideangle shafts #SAK-D331 to see how they fit. Here they are side by side:
imageshack.us/photo/my-images/706/3racingdriveshaftuwassk.jpg
(can't even post images from my rctech account?)
Now that SSK wasn't entirely (factory-)clean when i took it apart, but the UWAs support a bigger angle: they rotate smoothly even with full lock with the SAK-D310 Alu Steering System (which neither SSK did).
So now i have spare SSKs