I knew you were going to ask that. Let me look it up......
In the registry, create the following new String Value (REG_SZ):
Set the value to 1.0 to get the same linear response as the beta. 1.7 to get the same nonlinear response as the default in 3DxWare 6. The larger the number, the more nonlinear the response, and also the larger the deadzone.
You need to restart the driver after making a change. I only look up the value when the driver starts.