I thought of a different way to wire shift registers.
Normally, you connecct all the latches and clocks together, and then you do serial from arduino to serial in 1, and serial out 1 to serial in 2, ect.
This way is different... You connect all of the clocks and serial in lines together. Then you control each latch seperately. So you send the same data to all, and trigger (latch) 1, and send more data, and trigger 2.
This idea uses more pins, but whatever... I think it's a cool idea.. Let me know what you think... And if you like it, I'll rey to make it...