CCI's analog inputs aren't zeroed

[gbear605]

We're using the Custom Control Interface from eStop Robotics to connect operator controls on our driver station. Digital buttons work fine. However, we also want to use analog joysticks with it. When we wired them up to the analog ports on the CCI, the output of the joysticks aren't zeroed, when they sit at neutral, they are very close to the left edge of the bar that displays on the driver station (at -0.88). When you move them left, they go down to -1. When you move them right, they go up to 1 and then down to 0.

One member of the team believe that when they were used previously, we had a similar issue but we were able to rezero it to have the neutral position at 0. However, now we can't figure out how to do that. The only documentation for the CCI that we could find mentioned nothing about it.