Thats a stumper, it sounds like you are doing everything I'd do.
Can you verify the connections you
don't have? What I mean is please be sure that you haven't connected anything to SUMJ, NC, ST[1 2], or CP[1 2 3 4].
Vratio definitely needs to be connected, it is what powers the final output stage of the device.
You can check the KoP Gyro design package at the bottom of this page:
http://usfirst.org/roboticsprograms/....aspx?id=16337 . It is released under a very open license, so do what ever you please with it.
There are also other gyros that some teams have gotten to work, so don't despair. But before we throw away your parts, lets make this work.